180 TRIFORIS. 



T. MARMORATUS, Pease. PI. 37, fig. 94. 



Whorls 15, slightly convex, with three spiral series of granules, 

 the lower series largest ; light brownish, the granules white. 



Length, 10 mill. 



Sandwich Is. 



T. FUSCA, Dunker. PI. 37, fig. 95. 



Somewhat solid, brownish, sides a little convex ; whorls 12-14, 

 with distinct suture, with close, subconflueut granules in three spiral 

 series, the middle narrower and fainter. Length, 10-11 mill. 



Japan. 



T. ISLEANUS, Velain. PL 37, fig. 96. 



Shell yellowish, whorls 14 or 15, scarcely convex, with three 

 spiral rows of granules, the upper one less developed. 



Length, 9 mill. 



Islands of St. Paul andAmsterdam, Ind. Ocean. 



T. MALVACEUS, Jousseaume. PL 37, figs. 97, 97a. 



Rather solid, violet-ash color, granules white ; whorls 18, biseri- 

 ately, spirally granulated, the granules margining the suture on 

 either side. Length, 5-9 mill. 



New Caledonia. 



T. DOUVILLEI, Jouss. PL 37, fig. 98. 



Solid, yellowish white ; whorls 15, biseriately spirally granulated 

 Length, 6 mill. 



Mauritius. 



T. BLAINVILLI, Jouss. PL 37, fig. 99. 



Rather solid, light cinnamon brown ; whorls 1*6-17, with three 

 spiral series of tubercles, and well impressed suture, body whorl 

 with two additional carinse, not tuberculated. Length, 4'5 mill. 



N. Caledonia. 



T. MARIEI, Jouss. PL 37, fig. 100. 



Rather solid, narrow, yellowish white ; whorls 15, flat, with three 

 spiral series of granules, the middle one smaller, the first whitish, the 

 third yellowish, body whorl with two additional series. 



Length, 6'5 mill. 



N. Caledonia. 



T. BIGEMMA, Watson. PL 37, fig. 1. 



Solid, yellowish white, pale brownish at the base of each whorl 

 and base of body* whorl ; whorls about 22, convex, with deep suture, 



