508 VOLUTA. 



alba. 22. Shell oval, minute, longitudinally stri- 

 ated ; spire obtuse ; aperture contracted. 



Volutaalba. Walker 's Mm. Shells, f. 61. Adams's Mi- 

 crosc. p. 639. t. 14. f. 27. Montagu Test. p. 235. Ma- 

 ton and Racket, in Lin. Trans, viii. p. 130. 

 Inhabits the sea-shore at Sandwich, and Sheppy Island. Wal- 

 ker. 

 Shell one tenth of an inch long; white, glossy, opake, with 

 four whirls finely striated ; aperture long and narrow. 



pellucida. 23. Shell conical, minute; body- 

 whirl striated transversely at its base, and 

 longitudinally ribbed above. 



Voluta spiralis. Maton and Racket, in Lin. Trans, viii. 



p. 130. 

 Turbo spiralis. Montagu Test. p. 323. t. 12. f. 9. 

 Walkers Minute Shells, f. 46. 



Found among some sand from Salcomb Bay, Devon. Mon- 

 tagu. 



Shell one line long, and half as broad, pellucid, glossy, white, 

 with four or five whirls ; the body-whirl is marked with 

 transverse spiral ridges half way from the base, and the up- 

 per half is finely ribbed longitudinally ; the whirls are rather 

 flat, and the suture is bordered by a very fine spiral ridge. I 

 have been obliged to change the name, as spiralis had before 

 been given by Gmelin to a different species. , 



unidentata. 24. Shell conical, smooth, with five 

 or six rather depressed whirls; pillar with a 

 single tooth. 



Voluta unidentata. Maton and Racket, in Lin. Trans. 



viii. p. 131. 

 Turbo unidentatus. Montagu Test. p. 324. 



Inhabits the sea, on the coasts of Devonshire. Montagu. 



Length two-tenths of an inch, and nearly half as broad. Shell 

 strong, conical, smooth, glossy, sub-pellucid, white, usual- 

 ly with a tinge of purple or rose colour at the summit ; 

 whirls five or six, not raised, and ending in a somewhat ob- 

 tuse apex. It resembles Turbo Ulva in its shape, but the 

 tooth on its pillar is an invariable discriminating mark, and 

 the colour also is different. 



