76 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.56. 



This belongs to the same general group as C. aculea, but has quite 

 distinct sculpture and is stouter in proportion. Like that species it 

 is variable in its coloration. 



CYTHARELLA HIPPOLITA, new species. 



Plate 22, figs. 6, 8. 



Shell small, slender, whitish, dark brown, or spirally banded with 

 brown and white; nucleus with a very small blunt apical whorl, the 

 succeeding whorl (worn in the specimens) probably feebly sculp- 

 tured ; subsequent whorls about five, with an appressed suture ; spiral 

 sculpture of very fine spiral striae, perceptible under magnification, 

 becoming coarser toward the canal; axial sculpture (including the 

 terminal varix) of seven strong ribs with wider interspaces, slightly 

 protractive anteriorly, continuous up the spire around which they 

 show a slight twist, and extending on the last whorl to the canal; 

 aperture narrow, elongated, anal sulcus wide, shallow, outer lip thick- 

 ened, smooth internally, inner lip simple; canal hardly differentiated. 

 Height of shell, 5.7; of last whorl, 3.5 diameter, 2 mm. Cat. No. 

 127536, U.S.N.M. 



Range. — Shell drift at San Hipolito Point, Lower California, and 

 also at San Diego, California ; Hemphill. 



Much like C. aculea, but constantly stouter and shorter, with one 

 more rib and coarser striation. 



CYTHARELLA VERDENSIS, new species. 



Shell small, short- fusiform, whitish or feebly dotted with brown, 

 with three brown nuclear and four subsequent whorls; apex of the 

 nucleus very small, smooth, the other two microscopically rugose; 

 suture appressed behind a faint anal fasciole, whorls moderately 

 rounded ; spiral sculpture uniform, of fine attenuated close-set spiral 

 threads covering the whole surface and crossed by minutely sharp in- 

 cremental lines giving a peculiarly rough effect ; other axial sculpture 

 of (on the last whorl about 12) rather feeble rounded ribs obsolete 

 anteriorly with about equal interspaces; aperture elongate, narrow 

 with no differentiated canal ; the outer lip moderately varicose, sliarp- 

 edged, smooth within, the anal sulcus rounded, shallow, close to the 

 suture. Height of shell, 6.5; of last Avhorl, 5; diameter, 3 mm. Cat. 

 No. 266336, U.S.N.M. 



Range. — Agua Verde Ba3% Lower California, Dr. Paul Bartsch. 



? CYTHARELLA JANIRA, new species. 



Plate 21, fig. 10. 



Shell small, acute, white or waxen, with a small smooth nucleus 

 of about two whorls and five subsequent moderately rounded whorls; 

 suture distinct, hardly appressed; spiral sculpture of sharp striae 



