SURCULA. 241 



spirally ridged ; yellowish white, the superior ridge on each 



whorl articulated with chestnut and white. L. 16, diam. G nrilh 



Isl. Annaa (Cuming) ; Cook's Islands (Garrett). 



This is the S. interrupta of Sowerby, ncH Lamarck; S. modesta 



of Weink., not Sowb. (fig. 86 a). 



S. CINCTA, Lamarck. PI. 6, fig. 86. 



Spire convex in outline, slightly acuminated towards the tip ; 

 whorls encircled throughout with tumid ridges ; yellowish brown 

 or reddish brown, aperture same color. L. 14, diam. 5'5 mill. 

 Heal Llejos (probably erroneous), and Isl. Annaa 



(Cuming); Mauritius (Weinkauff); 



Viti Islands (Garrett). 



This is the S. modesta, Sowb., and the shell described and 

 figured under that name by Weinkauff = the preceding species. 



S. BTJUBATA, Reeve. PL 6, fig. 8Y. 



Shell chocolate-brown, encircled by narrow, lighter-colored 

 keels, the second keel, which is somewhat stronger than the 

 others, often broken up into small tubercles ; interior of aperture 

 chocolate-colored. L. 20, diam. 8 mill. 



Philippines (Cuming) ; Mauritius (Robillard) ; 



Viti Isles (Garrett); Solomon Islands (Smith). 

 Distinguished from the preceding species by its narrower 

 form, longer spire, sharper ridges and darker color. 



S. RADULA, Hinds. PI. T, figs. 89, 88, 90. 



Shell dark brown, encircled by ridges of which the one 

 defining the shoulder-angle and those below it are granular or 

 tuberculate ; the angle-row usually white ; sometimes with 

 chestnut bands. L. 18, diam. 6 mill. 



Red Sea, Malacca, Australia. 



S. versicolor, Weink. (fig. 88), is merely a variegated speci- 

 men, and S. raduliformis,Wemk. (fig. 90), has the sculpture not 

 so strongly developed. I am inclined to think that P. Metcalfei, 

 Angas, P. obeliscus, Reeve, P. pyramidata, Val., which I have 

 treated under Drillia, will need to be united with this form when 

 fuller series shall be available for comparison. 



