kDRILLIA. 183 



. CANCELLATA, Carpenter. 

 Shell like a young incisa in form, the spire decorticated, four 

 lanate whorls remaining, suture distinct, with about twenty 

 small longitudinal ribs crossed by close revolving striae, cancel- 

 lating the surface, and sometimes the intersections subnodulous. 



Puget's Sound. 



(Two specimens found. I an not acquainted with the species ; 

 it has not been figured. 

 D. EBURNEA, Carpenter. 



Shell turreted, pinkish white, rather thin, smooth, shining; 

 spire decollated ; nine normal whorls remaining, planate above, 

 appressed above the sutures and medianly concave, with here 

 and there obsolete irregular longitudinal ribs, base prolonged, 

 with a conspicuous, open canal. L. 1'3, diam. '45 mill. 



Near Gulf of California. 



Easily recognized by its smooth, glossy aspect and French- 

 white c'olor ; the notch lying along a broad spiral channel, which 

 throws the junction of the whorl as it were up the future. Un- 

 figured and unknown to me. 



D. MCESTA, Carpenter. PL 12, fig. 38. 



Shell dark brown under an olivaceous epidermis, with about 

 ten curved longitudinal ribs, obsoletely nodulous on the 

 periphery, with the whorls usually slightly constricted above it, 

 ribs generally obsolete on the body-whorl of adult specimens ; 

 suture narrowly corded, noduled and spotted ; aperture choco- 

 late within. L. 30, diam. 10 mill. 



Southern California, Lower California. 



D. TOROSA, Carpenter. PI. 14, fig. 93. 



Whorls with angulated shoulder bearing nodulous termina- 

 tions of about ten short oblique ribs, no spiral sculpture ; burnt- 

 brown, under an olivaceous epidermis ; nodules whitish, aperture 

 brown. L. -95, diam. -3 inch. 



Southern California, 

 Var. AURANTIA, Carpenter. 



Shell orange-colored, sometimes spirally striate. 

 L. '6, diam. '28 inch. 

 13 



