370 Mr. Gray's Monograph on the Cyprceidce. 



31. Cyprcea Onyx. — The Onyx Cowry. 



Testa ovato-pyriformi, subumbilicata, obscure fasciata, albido- 

 violacea ; lateribus subtusque nigris ; linea dorsali lata, pallida ; 

 dentibus fusco-nigris ; columella antice plicata. 



Cypraea onyx. Lin. Sys. Nat. 1177. (1). Gmelin. 3410. 

 Dillzcyn 453. 



Cyprasa pulla. Gmelin 3412. (2). Schreib. Conch, j. 69. 



Cypraea adusta. Chemnitz x. 106. Lamarck Ann. Mas. xvi. 

 92. Hist. vii. 389. 



Cypraea n. 20. Schroet. Einl. t. 139. 



Icon. Bonanni Rec. iii. f. 255, (j). Kirch, ill . f. 254. List. 

 Conch, t. 657. f. 2 ! Guullier t. 15. f. N. (1). Chemnitz x. t. 145. 

 f. 1341 ! 



2. Incomplela. Testa, ovata, umbilicata, fusco-rufescente, zonis 

 binis pallidis ; basi lateribusque pallide brunneis ; dentibus au- 

 rantiis. 



3. Decorticata. Testa, dorso pallide bifasciato. 

 Icon. Martini j. t. 20. f. 269, 270. 



Cypraea pulla. Gmelin 3412. Schreiber's Conch, j. 69. 



Inhabits Coast of Asia. Linnwus. Lamarck. Mus. Brit. 

 J. Sowerby, Nost. 



Shell ovate, rather ventricose, with two very obscure, narrow, 

 pale brown bands ; back, pale lilac, with a broad dorsal line, ex- 

 hibiting the fuscous undercoat ; the base and sides brownish 

 black ; the base rather convex ; the sides slightly thickened, 

 upper part paler; teeth, blunt, rather distant, black, all small 

 except the two or three front, which are large and extended over 

 the columella ; spire, concave, often closed over when full grown. 



When young, the shell is dark reddish-brown, with two narrow 

 pale bands ; the base is pale fulvous, with orange teeth. When it 

 becomes more perfect, the edge is more thickened and blacker, 

 and there is a narrow dorsal line, and the teeth are still orange ; 

 at length the pale lilac coat is thrown over, leaving a broad lance- 

 olate dorsal spot, and the base and teeth become quite black. It 

 varies greatly in size : n. 1, axis {■§? diameter T 7 g, and n. 2., axis 

 |§, diameter {% of an inch. 



