K0.2295. NEW NORTH PACIFIC MOLLUSKS—DALL. 305 



height of shell, 7.5; of last whorl, 5.2; of aperture, 3.5; diameter, 

 3 mm. U. S. Nat. Mus. Cat. No. 56913. 



Type-locality.— -Csitsi\iD.Si Islaud, California; W. H. Dall. 



MANGILIA (KURTZIELLA) TERSA, new species. 



Shell small, thm, slender, acute, yellowish with a narrow periph- 

 eral brown band, which on the spire lies just behind the suture; 

 with seven and a half whorls, including the polished nucleus, which 

 begins with a small coil then becomes more mflated and finally pre- 

 sents a peripheral keel before the normal adult sculpture begins; 

 axial sculpture of (on the last whorl about 13) narrow rounded ribs 

 with much wider mterspaces, extending over the base on the last 

 whorl and most prominent at the periphery on the spire; there are 

 also fine incremental lines which in unworn specimens make the 

 sculpture minutely imbricated ; suture distinct, appressed, and more 

 or less undulated by the ribs; anal fasciole wide, constricted, forming 

 a shght shoulder to the whorl in front of it; spiral sculpture of fine 

 close scabrous revolving threads over the whole surface; aperture 

 narrow, outer lip thin, simple, with a wide shallow anal sulcus, the 

 body erased, the pillar straight, attenuated m front, canal short, 

 hardly differentiated; height of shell, 11; of last whorl, 6.5; of aper- 

 ture, 5; diameter, 3.5 mm. U. S. Nat. Mus. Cat. No. 133910. 



Type-locality. — San Diego, California; Miss J. M. Cooke. 



AGATHOTOMA POMARA, new species. 



Shell smaU, fusiform, solid, with six moderately convex whorls, 

 the nucleus small, subglobular, smooth (slightly decorticated) ; axial 

 sculpture of (on the penultimate whorl 11, on the last whorl 9) 

 promment, slightly shouldered ribs with wider interspaces, the ribs 

 undulating the appressed suture; spiral sculpture of close-set alter- 

 nated threads over the whole siu-face except between the shoulder 

 and the suture, which is arcuately striated by tlie incremental lines ; 

 aperture narrow, straight, the anal sulcus moderate, the outer lip 

 thickened, simple, the inner lip with a wash of enamel; the canal 

 hardly differentiated; height of shell, 7; of aperture, 4; diameter, 

 3 mm. U. S. Nat. Mus. Cat. No. 152746. 



Type-locality. — San Pedro, California; H. Lowe. 



The shell is discolored so the normal color can not be determined. 



ZETEKIA CURT A, new species. 



Shell, small, short, solid, inflated, of a brownish color, nucleus 

 minute smooth, succeeded by about three subsequent strongly sculp- 

 tured whorls; suture distinct; axial sculpture of (on the penultimate 

 whorl about 15) narrow, sharp, similar riblets with wider interspaces, 

 this sculpture extending over the base; spiral sculpture of (on the 



115690— 19— Proc.N.M.vol.56 20 



