2. 



206 



B. with an oval, thin, brittle, fub-pellucid, yellowifh- 

 brown (hell, with numerous tranfverfe ftrise, of a lighter 

 colour; in fome approaching nearly to white, giving it 

 the appearance of a piece of veined wood. 



It has no external volution, but at the top is deprefTed 

 into di fub-umbilicus : aperture large, extending the whole 

 length of the fhell, but contraSs fomewhat at the upper 

 part. Infide glolTy white; Columella vifible to the end. 



This is the largefl; fpecies of Bulla found in England : 

 it fometimes grows to nearly two inches in length, but 

 more commonly not exceeding one inch and a half. 



We have obtained this fliell in Coynw all and DevonJJiire 

 rarely : and we are informed it is fometimes dredged up 

 at Weymouth ; but is by no means plentiful any where. 



This is not the only fpecies of Bulla whofe inhabitant 

 pofTeffes a gizzard of a teltaceous nature. 



Ampulla. Bulla Ampulla. Lin. Syji. p. llS3.— Gmel. Syft. p. 3424. 10. 



Tab. 7 . r, 1 . Martini Conch, i. t. 22. f. 202. 204:.— Id. t. 2 1. 



f. 188. 189. 

 Br. Zool. No. SA.— Tiirt. Lin. iv. p. 350. 

 Gualt. t. 12. E. ¥.—Favan. t.27. F, 6. 

 Petiv. Gaz. t, 50. f. 13. & t.,99. i". 14. 



B, with an oblong oval, fmooth, glofly fliell, of an 

 opaque whitifli colour^ mottled and veined with light 



che.fnut *. 



