03, 4. B. acutus, Müller.—Helix barbara, B. cretacea, articulatus, Turbo fasciatus, etc.—On sand and limestone in marine neighbourhoods, C.
Pupa. Small Snails, among Moss, stones, etc.
05. P. secale, Drap.—Turbo, Helix, Chondrus, and Vertigo juniperi and cylindricus.—S. Engl., Channel Isls., C. S. Eu. Larger and more tapering than the other sp.
06. P. umbilicata, Drap.—Turbo, Bulimus, Helix, and P. muscorum, cylindraceus, bidentata, etc.—C. and general, Eu. Mouth oblique, long, one tooth.
07. P. muscorum, Linn.—T., P., H., B. marginata, chrysalis, unidentatus, etc.—C. and gen. A rib behind the outer lip.
08. P. anglica, Férussac.—Vertigo, Turbo, and P. a. and ringens.—Scarborough, Newcastle, Guernsey, etc., Mr. More cylindrical than 5.
09. P. edentula, Drap.—H. exigua, Vertigo, Helix, and Jamimia e., nitida, etc.—C. and gen. No teeth in aperture; smooth.
10. P. minutissima, Hartmann.—P., Vertigo, Alæa cylindrica, obtusa, muscorum, etc.—Bristol, Salisbury, Skye, etc., R. as Brit.; C. in S. Eu. No teeth in aperture; striated.
11, 12. P. pygmæa, Drap.—P., T., V., H., Alæa, etc., sexdentatus, quinquedentatus, vulgaris, etc.—The lighter variety, P. alpestris, C. and general. Four or five teeth.
13. P. substriata, Jeffreys.—Vertigo, Turbo, Alæa sexdentata, curta, etc.—C. and gen. Very cylindrical; six teeth; striated.