TRIFORIS. 185 



T. OBKSULA, Jouss. PI. 38, fig. 27. 



Whorls 13, brownish; becoming yellowish at the tip and base> 

 ■with three series of spiral nodules, of which the middle one is minute, 

 the body whorl with five series of nodules. Length, 4 mill. 



New Caledonia. 

 T. PERLATUs, Issel. PI. 38, figs. 28, 34. 



Shining, whitish, whorls 12-13, Avith two spiral series of equal 

 nodules, body whorl Avith three additional smaller anterior series of 

 nodules. Length, 4-5 mill. 



Red Sea. 



Narrower than T. atomus, but similarly ornamented. T. Servaini, 

 Jouss. (fig. 34), has a general coloring of dark yellow, but seen 

 through a glass it has a yellow band and a white one on each whorl, 

 the latter with dark spots between the nodules ; it comes from the 

 Red Sea also, and will, I think, prove to be a better colored speci- 

 men of the above. 



T. Chaperi, Jouss. PI. 38, fig. 35. 



Solid, Avhite, yelloAvish brown at the base, whorls 12-14, biseriately 

 tuberculated, last Avhorl with three series, suture linear. 



Length, 4 mill. 



Isle of Bourbon. 

 T. XYSTicA, Jouss. PI. 38, fig. 36. 



Shell chocolate color, the tubercles Avhitish ; whorls 14-15, flat- 

 tened, with channeled suture, and three spiral series of tubercles, last 

 whorl with five series. Length, 13 mill. 



Madagascar. 

 T. RossiTERi, Jouss. PI. 39, fig. 39. 



Whorls 14, flattened, Avith channeled suture, reddish yelloAV, Avith 

 four spiral series of sharp Avhitish granules, eight series on the body 

 whorl. Length, 5-6 mill. 



Neiv Caledonia. 



T. ^GLE, Jouss. PI. 39, fig. 40. 



YelloAvish ash color, tubercles paler ; whorls 15, biseriately tuber- 

 culate, last Avhorl Avith three additional, smaller, anterior series. 



Length, 5 mill. 



Neiv Caledonia. 

 T. CNODAX, Jouss. PI. 39, fig. 47. 



Rather solid, yelloAvish, Avith the tubercles red; Avhorls 15, sub- 

 distantly biseriately sharply tuberculated, the body Avhorl Avith three 

 series. Length, 6 mill. 



N. Caledonia. 



