Страница - 262Страница - 264- Rachiglossa,
[220],
[422];
- eggs,
[124]
- Rachis,
[329–335],
[441],
[442]
- Radiolites,
[456]
- Radius,
[419]
- Radsia,
[403]
- Radula,
[213] f.;
- of Littorina,
[20];
- of Cyclophorus,
[21];
- of parasitic Mollusca,
[79]
- Raëta,
[454]
- Ranella,
[256],
[420]
- Range of distribution,
[362] f.
- Rangia,
[15],
[453]
- Ranularia,
[420]
- Rapa,
[423]
- Rapana,
[423]
- Raphaulus,
[305],
[309]
- Rathouisia,
[316],
[440]
- Rats devouring Mollusca,
[57]
- Realia,
[316],
[327],
[414]
- Recluzia,
[411]
- Rectum,
[241]
- Registoma,
[414]
- Relationship of Mollusca to other groups,
[5]
- Renssoellaria,
[512]
- Reproductive activity of oyster,
[112];
- system in Mollusca,
[123],
[134] f.
- Requienia,
[269],
[455],
[455]
- Respiration,
[150] f.
- Retzia,
[508]
- Revoilia,
[331],
[414]
- Reymondia,
[332]
- Rhabdoceras,
[398]
- Rhagada,
[311],
[324]
- Rhenea,
[325],
[440]
- Rhinobolus,
[504]
- Rhiostoma,
[247],
[266],
[309],
[414]
- Rhipidoglossa,
[225],
[405]
- Rhizochilus,
[75],
[423]
- Rhodea,
[356],
[441]
- Rhodina,
[307],
[310],
[442]
- Rhynchonella,
[466],
[470],
[471],
[472],
[474],
[483],
[487];
- distribution,
[487];
- fossil,
[492],
[497],
[499],
[505];
- stratigraphical distribution,
[506],
[507],
[508],
[511]
- Rhynchonellidae,
[487],
[501],
[505];
- stratigraphical distribution,
[507],
[508],
[511]
- Rhysota,
[67],
[310],
[314],
[316],
[319],
[440]
- Rhytida,
[319–326],
[333],
[359],
[440];
- habits,
[54];
- radula,
[232]
- Rillya,
[442]
- Rimella,
[418]
- Rimula,
[265],
[406]
- Ringicula,
[430];
- radula,
[230]
- Risella,
[413]
- Rissoa,
[415]
- Rissoina,
[415]
- Robillardia,
[77]
- Rochebrunia,
[331],
[414]
- Rock-boring snails,
[49]
- Rolleia,
[349]
- Rossia,
[389]
- Rostellaria,
[418]
- Rudistae,
[456]
- Rumina,
[260],
[442]
- Runcina,
[431];
- protective coloration,
[73]
- Sabatia,
[430]
- Sactoceras,
[394]
- Sagda,
[348–351],
[441]
- Sageceras,
[398]
- Salasiella,
[353],
[440]
- Salivary glands,
[237]
- Sandford, on strength of Helix,
[45]
- Sandwich islanders, use of shells,
[99]
- Sanguinolaria,
[456]
- Sarepta,
[447]
- Sarmaticus,
[409]
- Satsuma,
[314],
[316],
[441]
- Saxicava,
[447],
[457]
- Saxidomus arata, money made from,
[97]
- Scalaria,
[247],
[263],
[411];
- radula,
[224]
- Scaldia,
[452]
- Scalenostoma,
[422]
- Scaliola,
[415]
- Scaphander,
[428],
[429],
[430];
- radula,
[231];
- gizzard,
[238]
- Scaphites,
[399],
[399]
- Scaphopoda,
[444];
- defined,
[6];
- breathing organs,
[160];
- nervous system,
[205];
- radula,
[236]
- Scaphula,
[14],
[305],
[448]
- Scarabus,
[18],
[278],
[439],
[439]
- Scharff, R., on food of slugs,
[31];
- on protective coloration in slugs,
[70]
- Schasicheila,
[347],
[351],
[354],
[410]
- Schismope,
[266],
[407]
- Schizochiton,
[187],
[402],
[403]
- Schizodus,
[448]
- Schizoglossa,
[325],
[440]
- Schizoplax,
[403]
- Schizostoma,
[413]
- Schloenbacia,
[398]
- Scintilla,
[175],
[453]
- Scissurella,
[265],
[407];
- radula,
[226]
- Sclerochiton,
[403]
- Scrobicularia,
[15],
[164],
[453];
- siphons,
[164]
- Sculptaria,
[333]
- Scurria,
[405]
- Scutalus,
[356],
[442]
- Scutellastra,
[405]
- Scutus,
[245],
[406],
[406]
- Scyllaea,
[433];
- jaws,
[212];
- stomach,
[239]
- Segmentina,
[320]
- Selenites,
[339],
[341],
[440]
- Selenitidae, radula,
[231]
- Selenochlamys,
[296]
- Self-fertilisation,
[42–44]
- Semele,
[453]
- Semicassis,
[420]
- Semper, K., on habits of Limnaea,
[34];
- of Helicarion,
[45],
[67];
- on mimicry,
[67];
- on parasitic Eulima,
[79];
- on development of Limnaea,
[84],
[94];
- on sexual maturity in snails,
[129];
- on Onchidium,
[187]
- Sepia,
[381],
[385–387],
[389];
- egg-capsules,
[127];
- glands,
[136];
- jaws,
[214];
- radula,
[236];
- alimentary canal,
[238];
- ink-sac,
[241];
- hectocotylus,
[389]
- Sepiadarium,
[389]
- Sepiella,
[389]
- Sepiola,
[389];
- glands,
[136];
- radula,
[236]
- Sepioloidea,
[389]
- Sepiophora,
[388]
- Sepioteuthis,
[390];
- hectocotylus,
[139]
- Septaria,
[337],
[338],
[410]
- Septibranchiata,
[145],
[167],
[459];
- branchiae,
[166]
- Septifer,
[274],
[449]
- Sequenzia,
[420]
- Sergius Orata,
[104]
- Serrifusus,
[424]
- Sesara,
[305],
[440]
- Sex, differences of,
[133]
- Shell,
[244] f.;
- internal,
[174];
- shape of bivalve,
[445]
- Shell-gland, primitive,
[132]
- Shells as money,
[96] f.;
- as ornament, etc.,
[98] f.;
- various uses of,
[98] f.;
- prices given for rare,
[121];
- sinistral,
[249]
- Shores of N. Asia, no littoral fauna,
[2]
- Showers of shells,
[47]
- Sigaretus,
[186],
[245],
[267],
[411];
- foot,
[198]
- Sight,
[180]
- Silenia,
[459];
- branchiae,
[168]
- Silia,
[425]
- Siliqua,
[274],
[457]
- Siliquaria,
[248],
[418]
- Simnia,
[419]
- Simpulopsis,
[345],
[350],
[442]
- Simpulum,
[420]
- Simroth, on recent forms of Helix,
[22];
- on food of slugs,
[31];
- on crawling of Helix,
[45]
- Singular habitat,
[48]
- Sinistral shells,
[249]
- Sinistralia,
[424]
- Sinusigera,
[133]
- Sipho,
[424]
- Siphonalia,
[424]
- Siphonaria,
[18],
[431];
- classification,
[19];
- breathing organs,
[151],
[152]
- Siphonarioidea,
[431]
- Siphonodentalium,
[444]
- Siphonostomata,
[156]
- Siphonotreta,
[493],
[496],
[504];
- stratigraphical distribution,
[507],
[508]
- Siphons,
[173];
- in burrowing genera,
[165];
- branchial,
[155]
- Sistrum,
[75],
[423];
- radula of S. spectrum,
[79],
[222]
- Sitala,
[301],
[304],
[310],
[314–319],
[333],
[440]
- Skärgard, Mollusca of the,
[13]
- Skenea,
[415]
- Skenidium,
[505],
[508]
- Slit, in Gasteropoda,
[265],
[406]
- Slugs, habits and food of,
[30] f.;
- bite hand of captor,
[33];
- in bee-hives,
[36];
- in greenhouses,
[36];
- protective coloration,
[70];
- eaten in England,
[120]
- Smaragdia,
[21]
- Smaragdinella,
[430]
- Smell, sense of,
[192]
- Smith, W. Anderson, quoted,
[98],
[111],
[114],
[191]
- Snails as barometers,
[50];
- plants fertilised by,
[102];
- cultivation for food,
[118] f.;
- used for cream,
[119];
- as medicine,
[120];
- banned by the Church,
[121]
- Solariella,
[408];
- radula,
[225]
- Solarium,
[264],
[412],
[413];
- radula,
[224]
- Solaropsis,
[343],
[353–357],
[442]
- Solecurtus,
[165],
[457]
- Solen,
[171],
[446],
[457];
- vision,
[190];
- habits,
[45]
- Solenaia,
[452]
- Solenomya,
[275],
[448]
- Solenotellina,
[456]
- Solomon islanders, use of shells,
[98]
- Somatogyrus,
[415]
- Sophina,
[305]
- Spallanzani, experiments on Helix,
[163]
- Spat, fall of,
[113]
- Spatha,
[294],
[331],
[336],
[452]
- Spekia,
[333]
- Spermatophore, in Cephalopoda,
[137];
- in Helix,
[142]
- Spermatozoa, forms of,
[136]
- Sphaerium,
[453]
- Sphenia,
[456]
- Sphenodiscus,
[398]
- Sphyradium,
[442]
- Spines, use of,
[64]
- Spiraculum,
[266],
[414]
- Spiraxis,
[442]
- Spirialis,
[249]
- Spirifera,
[468],
[501],
[505];
- stratigraphical distribution,
[507],
[508],
[511],
[512]
- Spiriferidae,
[501],
[505],
[508]
- Spiriferina, stratigraphical distribution,
[507],
[508]
- Spirobranchiata,
[464]
- Spirotropis,
[426];
- radula,
[218],
[219]
- Spirula,
[247],
[386],
[387],
[388]
- Spirulirostra,
[380],
[386],
[388]
- Spondylium,
[500]
- Spondylus,
[257],
[446],
[450],
[450];
- ocelli,
[191];
- genital orifice,
[242]
- Spongiobranchaea,
[437]
- Spongiochiton,
[403]
- Sportella,
[453]
- Starfish eat oysters,
[110]
- Stearns, R. E. C., on tenacity of life,
[38]
- Stegodera,
[306]
- Stenochisma,
[505];
- stratigraphical distribution,
[507],
[508]
- Stenogyra,
[324],
[442];
- S. decollata,
[279];
- food,
[34];
- smell,
[194];
- Goodallii,
[279];
- octona, sudden appearance,
[47]
- Stenogyridae, radula,
[234]
- Stenopus,
[440];
- habits,
[45]
- Stenothyra,
[415]
- Stenotis,
[416]
- Stenotrema,
[340],
[441]
- Stephanoceras,
[399]
- Stepsanoda,
[358]
- Stilifer,
[76],
[77],
[79],
[422]
- Stiliferina,
[76],
[422]
- Stiliger,
[432]
- Stilina,
[76]
- Stoastoma,
[348–351],
[410]
- Stoloteuthis,
[389]
- Stomach,
[239]
- Stomatella,
[408]
- Stomatia,
[408]
- Stomatodon,
[302],
[417]
- Strebelia,
[353],
[440]
- Strength of Helix,
[45]
- Strephobasis,
[417]
- Strepsidura,
[424]
- Streptaulus,
[414]
- Streptaxis,
[302],
[306],
[309],
[314–331],
[343],
[357–359],
[440];
- variation,
[87]
- Streptoneura,
[203],
[404]
- Streptosiphon,
[424]
- Streptostele,
[329],
[338],
[440]
- Streptostyla,
[343–355],
[353],
[440]
- Stricklandia,
[505];
- stratigraphical distribution,
[507],
[508]
- Strigatella,
[425]
- Stringocephalidae,
[506],
[508]
- Stringocephalus,
[492],
[497],
[498],
[500],
[501],
[506];
- stratigraphical distribution,
[507],
[508]
- Strobila,
[340],
[345–353]
- Strobilops,
[442]
- Strombidae, habits,
[64];
- penis,
[136]
- Strombina,
[423]
- Strombus,
[69],
[200],
[252],
[418];
- mimicking Conus,
[69];
- operculum,
[78],
[269];
- pearls from,
[101];
- metapodium,
[199];
- stomach,
[239]
- Strophalosia,
[504];
- stratigraphical distribution,
[507],
[508]
- Stropheodonta,
[497],
[505],
[508]
- Strophia,
[343–355],
[442];
- S. nana,
[278]
- Strophochilus,
[358],
[441]
- Strophomena,
[499],
[505];
- stratigraphical distribution,
[507],
[508]
- Strophomenidae,
[500],
[505],
[508]
- Strophostoma,
[248],
[414]
- Structure of shell,
[252]
- Struthiolaria,
[99],
[418];
- radula,
[216]
- Styliola,
[437]
- Stylodonta,
[339],
[441]
- Stylommatophora,
[11],
[181],
[439];
- origin,
[19]
- Subemarginula,
[406]
- Submytilacea,
[451]
- Subularia,
[422]
- Subulina,
[332],
[352],
[442]
- Subulites,
[420]
- Succinea,
[325],
[327],
[358],
[433];
- jaw,
[211];
- S. putris, parasite of,
[61]
- Succineidae,
[443];
- radula,
[234]
- Sudden appearance of Mollusca,
[46]
- Suessia, stratigraphical distribution,
[507]
- Sulphuric acid,
[237]
- Surcula,
[426]
- Sycotypus,
[424]
- Synaptocochlea,
[408]
- Syndosmya,
[453]
- Syringothyris,
[500],
[508]
- Syrnola,
[422]
- Syrnolopis,
[332],
[333]
- Systrophia,
[356],
[357]
- Tachea,
[441]
- Taenioglossa,
[223],
[411]
- Taheitia,
[414]
- Talona,
[457]
- Tanalia,
[304],
[417]
- Tancredia,
[453]
- Tanganyicia,
[332],
[415]
- Tanganyika, L., fauna of,
[12]
- Tanysiphon,
[454]
- Taonius,
[391],
[391]
- Tapes,
[454]
- Taste,
[179]
- Tebennophorus,
[143],
[340],
[440]
- Tectarius,
[413]
- Tectibranchiata,
[10],
[429]
- Tectura,
[305],
[405]
- Tectus,
[408]
- Teeth in aperture of the shell,
[63]
- Teinostoma,
[247],
[408]
- Teinotis,
[407]
- Telescopium,
[252],
[416]
- Tellina,
[440],
[453],
[453]
- T. balthica, variation,
[84]
- Tellinacea,
[453]
- Telotremata,
[511]
- Tenacity of life,
[37]
- Tenison-Woods, on red blood,
[171];
- on shell-eyes,
[189]
- Tennent, Sir J. E., on musical sounds produced by Mollusca,
[50]
- Tennentia,
[304],
[314],
[338],
[440]
- Terebellum,
[418];
- jumping powers,
[64]
- Terebra,
[246],
[263],
[426],
[426];
- radula,
[219]
- Terebratella,
[468],
[487];
- distribution,
[486];
- fossil,
[506];
- stratigraphical distribution,
[508]
- Terebratula,
[467],
[468],
[487];
- size,
[484];
- distribution,
[485],
[486];
- fossil,
[492],
[499],
[506];
- stratigraphical distribution,
[506],
[507],
[508]
- Terebratulidae,
[487];
- fossil,
[500],
[505],
[506];
- stratigraphical distribution,
[507],
[508]
- Terebratulina,
[466],
[479],
[487];
- larva,
[482];
- distribution,
[486];
- fossil,
[506];
- stratigraphical distribution,
[508];
- form of shell,
[510]
- Teredina,
[457]
- Teredo,
[262],
[457],
[458];
- nervous system,
[206];
- intestine,
[241]
- Tergipes,
[432]
- Terquemia,
[450]
- Testacella,
[22],
[52],
[440];
- habits, etc.,
[49],
[51] f.;
- pulmonary orifice,
[160];
- eyes,
[186];
- radula,
[231];
- anus,
[241]
- Testicardines,
[466],
[487];
- muscles,
[476];
- fossil,
[497],
[504];
- external characters,
[497];
- internal characters,
[499];
- attachment of muscles,
[501];
- stratigraphical distribution,
[508]
- Testis,
[135]
- Tethyidae,
[216]
- Tethys,
[432]
- Tetrabranchiata,
[391] f.
- Thala,
[425]
- Thalassia,
[319]
- Thalotia,
[408]
- Thapsia,
[329]
- Thaumasia,
[349],
[442]
- Thaumastus,
[356],
[442]
- Thecacera,
[434];
- radula,
[229]
- Thecidiidae,
[487];
- fossil,
[501],
[506],
[508]
- Thecidium,
[475],
[479],
[480],
[483],
[487];
- fossil,
[506],
[508]
- Thecosomata,
[435]
- Thelidomus,
[346–351],
[350],
[441]
- Theora,
[453]
- Therasia,
[441]
- Thersites (Helicidae),
[322],
[325]
- Thersites (Fasciolariidae),
[424]
- Thetis,
[454]
- Thracia,
[245],
[459]
- Thread-spinning,
[29]
- Thridachia,
[432]
- Thyca,
[76],
[79]
- Thyrophorella,
[330],
[440]
- Thysanoteuthis,
[390]
- Tiedemannia, veliger,
[132]
- Tiphobia,
[332],
[333],
[417]
- Titicaca, L., Mollusca of,
[25]
- Todarodes,
[390]
- Tomichia,
[414]
- Tomigerus,
[334],
[356],
[358],
[442]
- Tomocyclus,
[354]
- Tomostele,
[330],
[440]
- Tonicella,
[403]
- Tonicia,
[403];
- eyes,
[188]
- Torellia,
[411]
- Torinia,
[413];
- radula,
[224];
- operculum,
[269]
- Tornatellina,
[278],
[319],
[323–327],
[338],
[358],
[443]
- Tornatina,
[250],
[430]
- Torquilla,
[442]
- Toucasia,
[455]
- Touch, sense of,
[177]
- Toxoglossa,
[218],
[426]
- Trachia,
[314]
- Trachyceras,
[397]
- Trachydermon,
[403]
- Trachyteuthis,
[389]
- Tralia,
[439]
- Transovula,
[419]
- Trematis,
[492],
[493],
[504];
- stratigraphical distribution,
[507],
[508]
- Trematonotus,
[407]
- Tremoctopus,
[384];
- radula,
[236];
- hectocotylus,
[137]
- Trevelyana,
[434]
- Trichia,
[316]
- Trichotropis,
[275],
[411]
- Tricula,
[302]
- Tridacna,
[273],
[455]
- Triforis,
[416];
- radula,
[224]
- Trigonellites,
[397]
- Trigonia,
[15],
[254],
[269],
[448];
- jumping powers,
[65];
- distribution,
[370]
- Trigonochlamys,
[296],
[440]
- Trigonostoma,
[426]
- Trimerella,
[495],
[504],
[508],
[511]
- Trimerellidae,
[493],
[494],
[496],
[504];
- stratigraphical distribution,
[507],
[508]
- Trinacria,
[448]
- Triodopsis,
[340],
[441]
- Triopa,
[434]
- Triopella,
[434]
- Triopha,
[434]
- Tritaxeopus,
[385]
- Triton,
[256],
[275],
[420];
- jaws,
[212]
- Tritonia,
[433];
- protective coloration,
[71]
- Tritonidea,
[424]
- Trivia,
[419]
- Trochidae, egg-capsules,
[125]
- Trochiscus,
[408]
- Trochita,
[248],
[412]
- Trochoceras,
[395]
- Trocholites,
[395]
- Trochomorpha,
[306],
[321],
[324],
[327],
[333],
[441]
- Trochonanina,
[331],
[440]
- Trochosphere,
[5],
[130]
- Trochotoma,
[266],
[407]
- Trochus,
[263],
[408];
- eye,
[182];
- stomach,
[239]
- Trophon,
[423]
- Tropical beach, Mollusca of a,
[3]
- Tropidophora,
[414]
- Tropites,
[397]
- Troschelia,
[424]
- Truncaria,
[423]
- Truncatella,
[260],
[414]
- Tryblidium,
[405]
- Trypanostoma,
[340]
- Trypho of Lampsacus, prayer against snails,
[121]
- Tubed operculates,
[157],
[266],
[300],
[307],
[309]
- Tudicla,
[424]
- Tudora,
[291],
[349],
[351],
[414]
- Tugonia,
[456]
- Tulotoma,
[340],
[416]
- Turbinella,
[100],
[262],
[264],
[424],
[424]
- Turbo,
[409];
- eye,
[182];
- osphradium,
[195];
- operculum,
[268]
- Turbonilla,
[250],
[332],
[422]
- Turcica,
[408]
- Turricula,
[425];
- radula,
[221]
- Turrilites,
[399],
[399]
- Turritella,
[252],
[417];
- radula,
[215],
[224]
- Tyleria,
[459]
- Tylodina,
[431]
- Tylopoma,
[416]
- Tympanotonus,
[416]
- Tyndaria,
[447]
- Typhis,
[423]
- Ultra-dextral shells,
[250]
- Umbonella,
[409]
- Umbonium,
[409]
- Umbrella,
[10],
[431];
- radula,
[217],
[230]
- Uncites,
[505];
- stratigraphical distribution,
[507],
[508]
- Underground snails,
[48]
- Ungulina,
[452]
- Unicardium,
[452]
- Unio,
[452];
- shell,
[254],
[259],
[273],
[341];
- variation,
[92]
- Union of Limax,
[128]
- Unionidae, origin of,
[15];
- eaten by rats,
[57];
- larvae,
[146]
- Urocyclus,
[331],
[440]
- Urosalpinx,
[423]
- Utriculus,
[430]
- Uvanilla,
[409]
- Vaginula,
[245],
[319],
[343],
[352],
[443]
- Vaginulidae, radula,
[234];
- anus,
[241]
- Valletia,
[456]
- Vallonia,
[441]
- Valvata,
[133],
[416];
- branchia,
[159]
- Valves of Chitonidae,
[401] f.
- Vanganella,
[454]
- Variation,
[82] f.
- Varicella,
[346],
[348]
- Velates,
[260],
[410]
- Velifera,
[353],
[440]
- Veliger stage,
[131];
- mistaken for perfect form,
[133]
- Velorita,
[302],
[453]
- Velum,
[131]
- Velutina,
[275],
[411];
- radula,
[223]
- Veneracea,
[454]
- Venericardia,
[451]
- Venerupis,
[454]
- Veniella,
[451]
- Venilicardia,
[451]
- Venus,
[270],
[271],
[446],
[454];
- V. mercenaria,
[97],
[374]
- Verania,
[391]
- Vermetus,
[247],
[418];
- radula,
[223]
- Veronicella,
[443]
- Verticordia,
[458]
- Vertigo,
[327],
[442];
- V. arctica,
[287]
- Vexilla,
[423]
- Vibex,
[417]
- Vitrella,
[289]
- Vitrina,
[22],
[296] f.,
[332],
[440];
- hardy habits,
[24];
- jumping powers,
[65];
- shell,
[175];
- radula,
[217]
- Vitrinella,
[408]
- Vitriniconus,
[314],
[440]
- Vitrinoidea,
[314],
[440]
- Vitrinozonites,
[340],
[440]
- Vitularia,
[423]
- Vivipara,
[324],
[343],
[416]
- Volume of water, effect in producing variation,
[94]
- Voluta,
[267],
[425],
[425];
- spawn,
[125];
- radula,
[217],
[221];
- distribution,
[370];
- prices given for rare,
[122]
- Volutaxis,
[348]
- Volutharpa,
[267],
[424]
- Volutolithes,
[425]
- Volutolyria,
[425];
- radula,
[222]
- Volutomitra,
[425];
- radula,
[221]
- Volutopsis,
[423]
- Volvaria,
[429]
- Volvatella,
[430]
- Volvula,
[430]
- Vulsella,
[75],
[446],
[449]
- Waldheimia,
[464],
[467],
[468],
[473],
[474],
[487];
- size,
[484];
- distribution,
[486];
- fossil,
[500],
[501],
[502],
[506],
[508]
- Walton and mussel cultivation,
[115]
- Wampum,
[97]
- Warner, R., quoted,
[37]
- Warning coloration,
[71] f.
- West Coast, South America, melanism of shells occurring on,
[85]
- Whelks, use of,
[118]
- Whitneya,
[424]
- Whitstable, oyster-parks at,
[106],
[112]
- Willem, V., on vision of Mollusca,
[185]
- Wollaston, T. V., quoted,
[32]
- Wood, Rev. J. G., on starfish eating oysters,
[111]
- Woodia,
[451]
- Woodward, S. P., on tenacity of life,
[38];
- Dr., on the same,
[38]
- Wotton, F. W., on egg-laying of Arion,
[42]
- Wright, Bryce, on tenacity of life,
[38]
- Xenophora,
[412];
- habits,
[64]
- Xenopoma,
[346],
[351]
- Xerophila,
[285],
[296],
[441]
- Xesta,
[310],
[319],
[321],
[440];
- mimicry by,
[66] f.
- Xylophaga,
[457]
- Zagrabica,
[297]
- Zebrina,
[285],
[296],
[442]
- Zeidora,
[406]
- Zidona,
[425]
- Zittelia,
[420]
- Zones of depth,
[361]
- Zonites,
[275],
[440];
- food,
[33];
- radula,
[232];
- distribution,
[294],
[296],
[340]
- Zospeum,
[187],
[442]
- Zygobranchiata,
[154],
[406]