PISANIA. 83 



Species of Hemifusus. 



Belcheri, Hinds. lacteus, Reeve. 



cochlidium, Linn. morio, Linn. 



colosseus, Lam. Ternatinus, Gmel. 



corona, Gmel. tuba, Ginel. 

 elongatus, Lam. 



Genus PISANIA, Bivona. 



Shell oblong ; spire prominent, whorls smooth, or spi- 

 rally striated ; canal very short ; outer lip thickened and 

 crenated. 



Syn. Pusio, Gray. 



Ex. P. fasciolata, Reeve, pi. 9, fig. 3. Operculum, 

 P. striata, Gmelin, fig. 3, a, 3, b. Shell, P. striata, 

 fig. 3, c. 



The Pisaniee, with but few exceptions, are small 

 shells, and have been hitherto distributed in various 

 genera, but possess sufiicient character in common, to form 

 a distinct group. 



Species of Pisania. 



buccinulum, Mart. pennata, Chem. 



cingilla, Reeve. pusio, Linn. 



discolor, Quoy and Gaim. striata, Gmel. 



fasciculata, Reeve. trilineata, Reeve. 



flamniulata. Quay and Gaim. tritonoides, Reeve. 

 pedicularis, Lam. 



