

SURCULA. 241 



spirally ridged ; yellowish white, the superior ridge on each 

 whorl articulated with chestnut and white. L. 16, diam. 6 mill. 

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

 This is the S. interrupta of Sowerby, not 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. 

 Real 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. 87. 



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, i 



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. 



Eed Sea, Malacca, Australia. 



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

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

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

 Angas, P. obeliscux, 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. 



