122 PALAEONTOLOGY OF CALIFORNIA. 



CONUS, Linn. 

 C. Remondii. 



PL 20, Fig. 79. 

 ( Volutilitkes Calif ornica, Con. Pacific R. E. Report, vol. 5, p. 322, PL 2, Fig. 9.) 



Shell biconical; spire nearly a third of the total length; 

 whorls six, sloping above, crenulated on the angle; sides straight, 

 regularly conical. Aperture linear, biangular behind, a little 

 narrowed in advance. Surface marked by numerous revolving, 

 impressed lines, and by fainter lines of growth. 



Length, usually about 1 inch. 



Localities: Found by Mr. Remond at Cochran's, east of Mount Diablo, and 

 since found at Bull's Head Point, northeast of Martinez; at Clayton, above 

 the coal ; and at San Diego (Division B.). Also near Canada, or "Cajon de las 

 Uvas," Los Angeles County, whence it was described by Mr. Conrad under the 

 above name. 



This shell resembles C. Rouaultii, d'Arc, of the French Eocene: see Mem. Soc. 

 Geol. de France, 2 ser., torn. 3, pi. 13, fig. 22. It tapers more regularly anteriorly, 

 and the surface-markings are less distinct ; it is also more robust. The specific 

 name Californicua having been used by Hinds for a recent species, I propose the 

 above name in honor of Mr. Remond, who discovered the specimens from which 

 I became acquainted with the species. 



C. HORNII, 11. S, 

 PL 29, Fig. 22G. 



Shell very unecpmlly biconical; spire low; whorls seven and 

 a half or eight, concave above, acute on the angle, with a very 

 fine thread-like groove just inside of the margin. Mouth long, 

 narrow, straight; outer lip curved, most prominent above; 

 sides of the body whorl straight. Surface marked by a few 

 oblique, revolving bands below, and sometimes by one or two 

 on the top of the whorl. 



Figure, natural size. 



Locality: Alizos Creek, near Fort Tejon. (Division B.) Collected by Dr. 

 Horn. 



