566 



posteriorly narrowed, anteriorly greatly dilated, inner lip arched, 

 rounded anteriorly. 



St. Vincent's, West Indies, Guild, litis. Cuming. 



Animal covered with a network of red-brown lines. 



10. Bulla albo-cincta (pi. cxx. f. 17, 18), Hoeveu, 

 Lcyden Journ. Nat. Hist. d. 6. st. 4. p. 10. 



B. testa, subglobosa, tenui, subpellucida, fusco-cinerascente, 

 fasciis tribus, latis, albis, transversim picta, striis fuscis, longi- 

 tudinalibus, obliquis. 



Shell subglobose, thin, semipellucid, ashy, fuscous, with three 

 broad, white, transverse bands, and numerous oblique brown stria?. 



China. Mm. Cuming. 



Sub-genus Tornatlna. 



11. Bulla voluta (pi. cxxi. f. 24), Quoy, Voy. de 1' Astro- 

 labe, pi. 26. f. 3:3-35. 



B. testa elongata, minima, laevi, cybndrica, alba; spira, promi- 

 nente ; apice acuto ; suturis latis, profundis. 



Shell elongated, small, smooth, cylindrical, white ; spire pro- 

 minent ; apex acute ; suture of the whorls wide and deep. 



Island of Guam. Mm. Cuming. 



12. Bulla canaliculata (pi. cxxi. f. 25). Bullina canali- 

 culata, Say, Amer. Conch, pi. 39. Yolvaria canaUculata, Say. 



B. testa, cybndrica, alba, nitida, lineis incrementi evanidis ; 

 spira elevatiuscula ; apice prominente ; anfractibus quinque, sulco 

 rotundato praeditis ; labro antice arcuato ; columella plica una 

 obhqua. ad basin. 



Shell cylindrical, white, shining, with evanescent lines of growth ; 

 spire rather elevated ; apex prominent ; whorls five, furnished 

 with a rounded groove ; outer hp anteriorly arcuated ; columella 

 with a single oblique fold at the base. 



Carolina, U. S. Mus. Metcalfe. 



13. Bulla mammillata (pi. cxxi. f. 26), P/iilippi, Enum. 

 Moll. Sicil. vol. i. t. vii. f. 20. 



B. testa, niinuta, cylindrica, longitudinaliter substriata; vertice 

 truncato ; medio papillato ; spira oonspicua, truncata, anfractibus 

 tribus, quorum primus papillam elevatam sistit ; apertura superne 



