Class VI. STROMBUS. SCREW-SHELL. 277 



GENUS XXIV. STROMBUS. SCREW^ . 

 SHELL. 



Animal, a Slug. ..... 



Shell univalve, spiral. 



Aperture much dilated, and the lip expanding, 



produced into a groove, bending to the 



left. 



Lin. Syst. 1207. No. AQQ. Lin. Tr. viii, 141, !• pes peLe- 



Gm. Lin. 350?. Mont. Test. Br. 253. ^^^^' , 



-I-. fi nr ^ T- - corvorant s 



Faun. Suec. No. 2l64. List. yj,g^^ 



Conch, tab. S66.jig. min. 



Str. with ten spires, tuberculated along their 

 ridges, with the lip expanding and digitated. 

 The spires end in a most exquisite point. 

 Length about two inches. Extent of the ex* 

 panse an inch and a quarter. Tab. Ixxviii, 



Lin. Tr. viii. 14?- Mont. Test. Br. 255. id, 2. COSTATUS, 



Sup. App. 169. 



* Str. with a subulate shell; lip rounded; length 

 half an inch; inhabits the sea. 



Cormvall, Dorsetshire, and Devonshire; rare. 



