THALA. 161 



T. GRATIOSA, Reeve. PI. 47, fig. 363. 



Pink or violet, minutely decussated. Length, *4 inch. 



Galapagos Islands. 

 T. MIRIFICA, Reeve. PI. 4T,'fig. 364. 



Pink or light violet, somewhat transparent, sometimes with a 

 narrow white zone. Length, -3 inch. 



Philippines. Cuming ; Paumotus. Pease. 



Said to be thinner and more slender, with finer sculpture than 

 T. gratiosa, but the specimens before me va,ry so much that it 

 would be difficult to separate some of them from the figures of 

 that and other species. 



T. CERNICA, Sowb. PI. 47, figs. 365-369. 



Shell rosy orange. Length, '65 inch. 



Mauritius. 



T. angustata, Sowerby (fig. 366), from same locality, presents 

 no valid differences, 



Yar. ANGIOSTOMA, Pease. Fig. 367. 



White, shaped like T. mirifica, but larger, with somewhat 

 stouter and coarser sculpture. Length, 12 mill. 



Paumotus. 



Yar. FUSUS, Souverbie, figs. 368, 369. 



Slightly stouter than the type, light violet, or pink-white, 

 obscurely banded. Length, 10 mill. 



New Caledonia. 



The above are from widely separated localities, and as there 

 are slight differences, they may be distinguished as varieties for 

 the present. 



T. BREVICULA, Souv. PI. 47, fig. 370. 



Light violet. Length, 7 mill. 



New Caledonia. 



T. ADUMBRATA, SoUV. PI. 47, fig. 371. 



irt}^ white, maculate with chestnut, forming an interrupted 

 band. Length, 10 mill. 



New Caledonia. 



Distinguished by its cylindrical form and very fine sculpture. 



