ZOOLOGY. S59 



Shell con\o\nte ; apeHure narrow, without a beak ; colu» 

 mella plaited. Plate 5, fig. 23. This geaus is composed 

 of five families ; * aperture entire ; ** subcylin- 

 drical, emarginate ; *** oval, eiTuse, emarginate; **** 

 fusiform, or spindle shaped ; ***** veniricose, spire 

 papilliary at the top. 



This is a very extensive genus, the greater part of which 

 are natives of the tropical seas, and are only found on the 

 shores after storms ; but few kinds are European, and these 

 do not possess any great degree of beauty, whilst the tropical 

 kinds are amongst the most beautiful of the whole tribe. 



24. Buccinum. Whelk. Inhabitant a Limax. 



Shell spiral, gibbous ; aperture oval, terminating in a short 

 canal inclining to the right, with a short beak ; interior 

 lip flattened. Plate 5, fig. 24. This genus is divided 

 into eight families ; * hifiated, rounded, thin, nearly 

 transparent, brittle; ** with a short exerted re- 

 fleeted beak, lip unarmed outwardly; *** outer 

 Up prickly on the hinder margin, in other respects cor- 

 responding with the preceding; **** Columella lip 

 dilated and thickened ; ***** Columella lip, as if worn 

 flat ; ***** J^ smooth, not included in the preceding divi- 

 sion ; ******* angular, not previously included ; 

 ******** tapering, awl shaped and smooth. 



Most of this genus are found adhering to rocks or stones, 

 beneath the surface of the ocean, but some few are terrene 



s 2 



