COLUMBELLA. 



183 



Kraussii, Sow. 

 laevigata, Liivi. 

 leucostoma, Gask. 

 mitrula, Dkr. 



nitida, Lam. 

 parvula, Dkr. 

 pulchrior, C. B. Adams. 

 pusilla, Sow. 



Sub-gen. alia, H. and A. Adams. 



Shell thin, smooth, covered with an epidermis; spire mo- 

 derate ; aperture ovate ; inner lip finely crenate ; outer lip with 

 the margin thickened, not callous in the middle, lirate internally. 



carinata, Hinds. 

 castanea, Gould. 

 gausapata, Gould. 



Hindsii, Gask. 

 unicolor, Soiv. 

 unifasciata, Soiv. 



Sub-gen. mitrella, Risso (not Swains.). 



Shell fusiform; spire elevated, acute, whorls smooth; colu- 

 mella simple, or with a few tubercles anterioi'ly ; outer lip simple 

 or crenate within. 



achatina, Soic. 

 adiastina, Duel. 

 albina, Kien. 

 austrina," Gask. 

 buccinoides, Soiv. 

 Californiaua, Gask. 

 chrisopis. Duel. 

 cribraria, La7n. 

 Crossiana, Reeluz. 

 denticulata, Soiv. 

 flexuosa, Brug. 

 Gervillii, Paijr. 

 idaliua, Duel. 

 impolita. Sow. 



intexta, Gask. 

 lactea, Duel. 

 ligula. Duel. 

 lutea, Quoy. 

 nympha, Duel. 

 pulla, Gask. 

 scripta, Linn. 

 semiconvexa. Lam. 

 sertularia, D'Orb. 

 tamelina, Duel. 

 Ticaoiiis, Sow. 

 valveta, Duel. 

 zebra, Gray. 



