CONOVULUS. 197 



The auimal is yellowish tinged with grey. 



This variety is found in brackish marshes about the 

 estuaries of rivers, as in the Thames, as high as Greenwich, 

 where it occurs in company with Assiminea Grayana^ and 

 furnished the subject of some of Mr. Berkeley's excellent 

 researches; in the Avon, near Bristol, and on the banks of 

 the Severn, 



SPURIOUS. 

 C. BuLLAoiDEs, Montagu. 



Volula Bidlaoides, Mont. Test. Brit. Suppl. p. 102, pi. 30, f. 4. — Turt. Conch. 



Diction, p. 254. 

 TornatcUa „ Fkrus. Tabl. Syst. p. 108. 

 Auricula „ Gray, Annals of Philos. 1825, name only. 

 Melampus Bulla, Lowe, Zool. Journ. vol. v. p. 293 (no descr.). 

 Detracia Bullaoides, Grav, Turt. Manual, p. 20 (as spurious). 

 Auricula cincjulata, C. Pfeif. Wiegm. Archiv. Nat. 1840, p. 251, teste Kuster, 

 Conch. Cab. I, sec. 16, p. 40, pi. 6. f. 4, 5, 6. 

 „ vliva, D'Orbig. Cuba Moll. pi. 1 3, f. 8, .'). 1 0. 



A native of St. Vincent's, admitted as British hy Montagu, on 

 the authority of the Portland collection. 



C. PusiLLus, Gmelin. 



r<jt/i(a pusilla, Gmel. Syst. Nat. p. 3436 (from Mart. Conch. Cab. vol. ii. pi. 43, 



f. 446). — DiLLW. Recent Shells, vol. i. p. 507. 

 I 'ol'du trijilicata, DoNov. Brit. Shells, vol. iv. pi. 1 38. — Mont. Test. Brit. Suppl. 

 p. 99. — Turt. Conch. Diction, p. 253. — Fleming, Encycl. 

 Edin. pi. 203, f. 13.— Dillw. Recent Shells, vol. i. p. 507.— 

 Wood, Index Testae. pK 1 9, f. 19. 

 Auricula nitens. Lam. Anim. s. Vert. (ed. Desh.) vol. viii. p. 332 (probably,) 

 from which JMelamjnis ovulum, Lowe, Zool. Journ. vol. v. 

 p. 289. 

 Auricula ovula, Potiez and Mich. Gal. Douai Moll. vol. i. p. 204, pi. 20, f. 13, 14. 

 Tralia pusilla. Gray, Manual L. and F. W. Shells, p. 21, as spurious (no descr.). 



A native of the Antilles, introduced hy Donovan, because Da 

 Costa had erroneously supposed it to be identical ivith one of 

 Walker's figures; supposed also, wrongly, to he a native of 

 Guernsey. The Acteon triplicatus of Fleming (Brit. Anim. 



