258 STROMBINj;. 



Sub-fam. STROMBIN^. 



Tentacles on the middle of the eye-pedicels. Foot 

 with the hind part narrow, subcylindrical, elongated. 

 Shell with the outer lip more or less expanded and 

 notched towards the fore part. 



The inner mantle-margin is dilated and covers the 

 columellar lip of the shell, ending posteriorly in a lobe ; 

 the outer is furnished at the margin with lobate and 

 tapering processes, which vary in their development ac- 

 cording to the genus. 



Genus STROMBUS, Linnaeus. 



Right edge of mantle entire. 



Operculum unguiculate, with the margin serrated. 



Shell ovate or turreted; aperture elongated, narrow, 

 emarginate or with a short canal in front, canaliculated 

 posteriorly ; outer lip often lobed and deeply notched 

 in front near the canal. 



Syn. Alata (part), Klein. Alatus, Humph. Cassida, 

 Linn, olim, not Lang. Lambis, Bolt. Conchilium, 

 Browne. Pyramea, Link. Pugil, Fahr. 



Ex. S. vittatus, Linnceus, pi. 27, fig. 1. Operculum, 

 S. galeatus. Wood, fig. 1, «, \,b. Shell, S. pugilis, Lin- 

 nceiis, fig. 1, c. 



The Stromhida are often called "Strombs" and "Wing- 

 shells." Owing to the great development of the outer lip, 

 they present a very different appearance in the adult state 

 to that in the young individuals. They are pretty gene- 



