FAMILY 2. COLIMACEA. 71 
Pl. CLXVI. Fig. 21 and 22. 
Hexix tursiNorpEs, Broderip, Proceedings Zool. Soc., 1840, p. 123. 
Pl. CLXVI. Fig. 23. 
Heuix Vatroni*, Nobis, Proceedings Zool. Soc., 1842. 
Pl. CLXVI. Fig. 24. 
Hetrx FENEsTRATA, Sowerby, Proceedings Zool. Soc., 1840, p. 137. 
Pl. CLXVI. Fig. 25. 
Hexrx BALTEATA, Sowerby, Proceedings Zool. Soc., 1840, p. 136. 
Pl. CLXVI. Fig. 26. 
Hevix aurata, Sowerby, Proceedings Zool. Soc., 1840, p. 100. 
Pl. CLXVI. Fig. 27. 
Hexzix ILoconensis, Sowerby, Proceedings Zool. Soc., 1840, p. 116. 
CAROCOLLA, Lamarck. 
Testa depressa, superné convexa, orbicularis, epidermide plerumque in- 
duta; anfractu ultimo acuté angulato, umbilicum szpissimé for- 
mante ; apertura plerumque ovali, labro subangulato, reflexo, plicis 
infra limbum szpé dentato. 
‘“« It is only with the view of diminishing the immense series of Helices,”’ 
says Lamarck, ‘‘ that I propose the genus Carocolla :”” the animals of both 
are indeed the same; but in order to facilitate the means of classifying 
them, the present genus may be profitably retained for those flat discoidal 
species in which the outer whorl of the shell is sharply angulated. 
* In dedicating this remarkable species to William Walton, Esq., we memorize the name 
of an assiduous collector and an esteemed friend. 
