MA. 10 



T. IfiGHELsr, Phil. Pl. 6, Bgs. 89, on. 



Shell Q nrhorla 1 .".jon^itn'linnlly strUted, 



spir:illy su'eate and ribbed, periphery strnn^ly sn! 



profound i-i vish ash t hrouirhoiit ; umbilicus rather open, 



ils margin slightly erenulated, umbilical \v:ill with or without 



spiral ribs. ])i:nn. S-1*J mill. 



Sandir/rl, 

 It is '/'. <<!<!, ^toma, Migh. (not, Menke). 



T. DILECTA, I>esh. PI. ('.. iigs. 01, '.)>. 



Shell discoidal, slightly convex; whorls (',, 

 striated, spirally sulcatc and rihlx-d, granular, periphci-y stPniLrly 

 ribhiMl, suture distinctly channeled; color tsiwny ; umbilicus 

 very wide, with a civuulated rib :it the border. 



Diain. 12'5 mill. 



Me of Bourbon. 

 T. STIIAMINKA, (imel. PI. 6, figs. 93-00. 



Shell convex ; whorls longitudinally striated, spirally silicate 

 and ribbed, ribs broad and 11'it, suture profound; color uniform 

 } T ellowislr brown ; umbilicus wide, ribbed at the border, rib 

 cren ula ted, umbilical wall with or without spiral ribs. 



Diam. 1 inch. 



Tranquebar; Philippines; Neiv Guinea. 



T.fulua, Hinds, is a 



Var. SICULA, Cantr. PI. 6, figs. 95, 96. 



The older authors gave the East Coast of Africa as the habitat 

 of S. stramineum, but afterwards a smaller shell agreeing with 

 this in sculpture and color, and differing only in size, 



was found in the Mediterranean and identified by Philippi 

 (Knum. Moll. Sicil., i. p. 173) as the same shell. Cantraine con- 

 sidering the difference in size and the widely separated habitats 

 has made the Mediterranean shell a distinct species, and named 

 it T. xiciila. At the best Cantraine's species is but a variety, of 

 which T.fallaciotsa, Tiberi. is a synonym. 



T. iNFUNDiin LiroiiMi-:, Gmelin. PI. li, figs. 07-99. 



Shell depressed, convex; whorls rounded, descending slowly, 

 channeled at the suture, longitudinally silicate, spirally su 

 and ribbed, ribs granular; color uniform brownish; umbilicus 



