Shell. Cylindrical, generally thick; aperture irregular, semi-ovate, rounded, and subangulated beneath; margins of outer lip nearly equal and reflected outwardly, unconnected at their upper parts; the plait of the columella interposed between them. Most frequently found in moss in Europe and America. Forty species.
- Pupa numia.
- P. uva.
- P. sulcata.
- P. candida.
- P. labrossa.
- P. fusus.
- P. tridentata.
- P. fasciolata.
- P. zebra.
- P. unicarinata.
- P. maculosa.
- P. clavulata.
- P. ovularis.
- P. Germanica.
- P. cinerea.
- P. tridens.
- P. quadridens.
- P. polyodon.
- P. variabilis.
- P. frumentum.
- P. secale.
- P. avena.
- P. granum.
- P. fragilis.
- P. dolium.
- P. umbilicata.
- P. muscorum.
- P. angilicus.
- P. rufescens.
- P. edontulis.
- P. odontostoma.
- P. petiveriana.
- P. dentata.
- · · · · ·
- P. contracta.*
- P. rupicola.*
- P. exigua.*
- P. armifera.*
- P. fallax.*
- P. ovata*
- P. pentadon.*
7. Genus Clausilia. Pl. [X].
Animal. See Helix.
Shell. Cylindrical, generally fusiform; summit obtuse, the last whorl smaller than the preceding; aperture irregular, rounded, oval; margin united, and externally reflected. Inhabits dry situations both in Europe and America. Fifteen species.
- Clausilia torticollis.
- C. truncatula.
- C. retusa.
- C. costulata.
- C. corrugata.
- C. inflata.
- C. Mediterranea.
- C. denticulata.
- C. collaris.
- C. papillaris.
- C. plicatula.
- C. rugosa.
- C. gracilis.
- C. chrysalis.
- · · · · ·
- C. teres.*
8. Genus Bulimus. Pl. [X].
Animals of this genus in formation are precisely as the Helix; they are, however, oviparous, producing eggs with the shell containing the animal perfectly matured; they are frequently as large as a pigeon’s egg.
Shell. Oval, sometimes turriculated, oblong; the summit of the spire obtuse, and the last whorl larger than all the others together; aperture oblong, oval, edge disunited; in adults the lip much reflected; columella smooth, with an inflection in the middle, the base entire, not channeled. Inhabits mountainous situations in Europe and America; some beautiful specimens have been found in the woods of Ohio. Sixty-three species.
- Bulimus ovatus.
- B. hæmastomus.
- B. gallina.
- B. sultana.
- B. zigzag.
- B. multifasciatus.
- B. Bengalensis.
- B. Caribæorum.
- B. octonus.
- B. terebraster.
- B. undatus.
- B. Richii.
- B. inversus.
- B. citrinus.
- B. sultanus.
- B. Pythogaster.
- B. ovoideus.
- B. interruptus.
- B. Peruvianus.
- B. Favannii.
- B. Kambeul.
- B. papyraceus.
- B. calcareus.
- B. decollatus.
- B. Lyonetianus.
- B. inflatus.
- B. radiatus.
- B. fragilis.
- B. Guadalupensis.
- B. Mexicanus.
- B. articulatus.
- B. acutus.
- B. scobinatus.
- B. planidens.
- B. ventricosus.
- B. montanus.
- B. hordaceus.
- B. lubricus.
- B. iostoma.
- B. geniostoma.
- B. odontostoma.
- B. formosus.
- B. Listeri.
- B. Kingii.
- B. Dufresnii.
- B. pulcher.
- B. maugeri.
- B. lævis.
- B. auris leporis.
- B. vexillum.
- · · · · ·
- B. glandiformis.*
- B. parvus.*
- B. virgo.*
- B. gracilis.*
- B. Gibbonius.*
- B. multilatus.*
- B. maculatus.*
- B. Pealianus.*
- B. lacteus.*
- B. decoratus.*
- B. Columbianus.*
- B. multilineatus.*
- B. corneus.*