FAMILY COLIMACEA. 59 



17. fusca. Shell small, scarcely umbilicated, of five whorls, mem- 



branaceous, glossy fuscous olive, plicately wrinkled, lip thin. 



18. fulva. Shell smaller, minutely umbilicated, trochiform, of six 



whorls, very thin, glossy fulvous, lip thin. 



19. lamellata. Shell very small, minutely umbilicated, subglo- 



bose, horny, of six whorls, fuscous horny, crossed by mem- 

 branaceous lamellae, lip thin. 



20. aculeata. Shell very small, moderately umbilicated, horny, 



of four whorls, crossed by fibroiis lamellae elongated into a 

 corona of lashes. 



21. pulchella. Shell minute, largely umbilicated, subhyaline, of 



three to four whorls, trumpet-shaped at the aperture. 



22. rotundata. Shell small, largely umbilicated, depressed ful- 



vous horny, red-spotted, of six whorls, closely rib-striated, lip 

 simple. 



23. rupestris. Shell minute, largely umbilicated, brown horny, 



of four to five whorls, Hp simple. 



24. pygmsea. Shell more minute, largely umbilicated, brown 



horny, of three to four whorls, lip simple. 



1. Helix aspersa. Besprinkled Helix. 



Shell : imperforate, obliquely conoid-globose, thin, greyish yellow, 

 blotched and banded with dark brown, 

 sometimes of a delicate straw-colour 

 without spot or band, spire short, 

 whorls four to four and a half, slop- 

 ingly convex, swollen, densely con- 

 centrically plicately striated, striae ren- 

 dered more and more obscure towards 

 the aperture ; by a copious shagreen 

 of very irregular opake wrinkles, last 

 whorl suddenly descending at matu- 

 rity ; aperture somewhat squarely 



ovate, Hp expanded, a little reflected, white, margins inclined 

 to approximate, columellar margin appressly dilated. 



Helix aspersa, Miiller (1774), Verm. Hist. p. 59. 



Helix hortensis } Pennant (1777), Brit. Zool. vol. iv. p. 136. pi. lxxxiv. 

 f. 129 (not of Miiller). 



Cochlea vulgaris, Da Costa (1778), Test. Brit. p. 72. pi. iv. f. 1. 



