336 TURBONILLA. 



T. BICINCTA, T. MUNDA, T. CINCTA, T. FRAGILTS, T. SCULPTILTS, 

 T. COMMODA, T. N1TIDA, T. MONOCYCLA, T. MODICA, T. VENUS- 

 TULA, T. EXIMIA, T. PERFECTA, T. MACILENTA, all of A. Adams. 



Japan. 



T. RUBROFUSCA, T. CuMiNGii, Carpenter. China Sea. 



T. CJELATA, T. ORNATA, Gould. Hong Kong. 



VI. Indian Ocean Species. 

 T. VELAINT, Tryon. PI. 75, fig. 99. 



White ; whorls 8, shouldered, longitudinally straightly plicate, 

 the wider interspaces with slight spiral impressed striae. 



Length, 3'25 mill. Isl. of St. Paul, Indian Ocean. 



Described by Velain as T. scalaris, preoccupied by Philippi. 



T. DISCULUS, Velain. PI. 75, fig. 97. 



White ; whorls 9, rather flattened, with fine, close longitudinal 

 ribs, terminating at the periphery of the body-whorl. 



Length, 3 mill. Isl. of St. Paul, Indian Ocean. 



T. PERONII, Velain. PI. 75, fig. 98. 



Grayish white, thin, with 7 convex whorls, with irregular 

 longitudinal riblets, becoming more or less evanescent about the 

 middle of the whorls. Length, 2'75 mill. 



Isl. of St. Paul, Indian Ocean. 

 T. TENUICOSTA, Issel. PL 75, fig. 4. 



White, a little shining; whorls 6J, a little convex, suture 

 margined, thinly, obliquely, longitudinally plicate, plicae fading 

 out on the last whorl, interstices much wider. 



Length, 2'25 mill. Eed Sea. 



T. SOLIDULA, Issel. PI. 75, fig. 3, 



Yellowish white, a little shining, obliquely longitudinally 

 plicate, interstices much wider, suture not margined ; whorls 

 8-9, somewhat convex, plications extending over the last whorl. 



Length, 3 mill. Eed Sea. 



T. CRYSTALLINULA, Issel. PL 75, fig. 1. 



White, pellucid, shining, fragile, with thread-like longitudinal 

 oblique plications extending over all the whorls, and much wider 

 smooth interspaces; whorls 9-10, convex. Length, 2 mill. 



Red Sea. 



