CRETACEOUS FOSSILS. 87 



a shell of nearly twice the size of the former. Surface marked 

 by three rows of large, rounded tubercles, one on the extreme 

 upper edge, two below. These tubercles are not always placed 

 directly opposite each other, and could not have been connected 

 by the rib of the former species. Details of surface-marking 

 unknown. 



Figure, natural size. 



Localities : San Diego, and Cochran's, east of Mount Diablo. 



In all of the specimens the surface is so much decayed that, while the coarser 

 ornaments are still discernible, the fine markings are obliterated. Better speci 

 mens will probably show revolving lines, since traces of that character seem to be 

 retained by one specimen. 



F. (H.) REMONDII, n. s. 



PI. 18, Fig. 36. 



SHELL fusiform, spire low; whorls five, rounded or subangular. 

 Aperture long, moderately wide. Inner lip simple; outer lip 

 thin, acute; canal long, straight. Body whorl rounded, or in 

 some specimens marked by three faint angles on the widest part, 

 the lower two placed nearer than the middle and upper ones. 

 Surface closely cancellated by numerous fine, linear ribs, sharply 

 defined, the included spaces being flat. 



The low spire and regular form of the last whorl will serve to 

 distinguish this pretty species, even in fragments. 



Localities: Collected at Cochran's, east of Mount Diablo, by Mr. Esmond, 

 and afterwards found by Mr. Mathewson and myself at Bull's Head Point, north 

 east of MartiQez (Div. B.). Of the specimens found at Cochran's none were more 

 than an inch in length ; while few of the Martinez shells were smaller than the 

 figure. Also found at Alizos Creek, near Fort Tejon. 



