92 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Sek. 



Dimensions: — Altitude of the type specimen, 13.5 mm.; 

 maximum diameter of the last whorl, 5.5 mm. 



Type: — No. 221, and cotype No. 222, Cal. Acad. Sci., lower 

 Miocene of Kern River, California, locality 64, in the bottom 

 of a small canyon about P/4 miles due north of Barker's ranch 

 house. 



Drillia temhlorensis resembles Drillia inermis Hinds, in hav- 

 ing almost no axial ribs, and in having an ornamentation con- 

 sisting chiefly of revolving lines. It may be distinguished from 

 the latter by its fine axial ornamentation, few spiral cords, less 

 distinct suture, and less angulated whorls. 



Drillia bulwaldana, new species 

 Plate 7, figures 3a, 3b, and 3c. 



Shell small, slender, solid, with eight to ten whorls; spire 

 high, with an acute apex; whorls angulated a little above the 

 middle producing prominent shoulders, very concave above, 

 convex below, each whorl crossed by thirteen strong, rounded 

 axial ribs with slightly wider interspaces, and numerous fine 

 spiral threads of unequal size, three or four on each whorl 

 more prominent than those intervening; the latter very fine, 

 and scarcely raised, making the surface appear to be spirally 

 striate ; suture distinct, wavy, bordered below by a sutural col- 

 lar about one-half millimeter in width; body-whorl with ten 

 or twelve major spiral threads, slightly concave on the posterior 

 portion, strongly nodose on the shoulder; aperture oval; canal 

 short; columella incrusted; posterior sinus deep and narrow, 

 between the suture and the angle. 



Dimensions : — Altitude of the type specimen, 21 mm. ; diam- 

 eter of the last whorl, 7 mm. 



Type:— No. 223, and cotypes Nos. 224 and 225, Cal. Acad. 

 Sci., lower Miocene of Kern River, California, locality 68. 



Drillia buzvaldana somewhat resembles Drillia montereyensis 

 Stearns but is larger, with less conspicuous sutural collar, more 

 distinct whorls, longer canal, and few and more prominent 

 axial ribs. 



Named in honor of Mr. J. P. Buwalda. 



