46 Bulletin Santa Barbara Society of Natural History. Vol. I 



NEW SHELLS FROM THE SANTA BARBARA CHANNEL. 



BY DR. LORENZO GORDIN YATES, F. L. S., F. G. S. A. 



Family VENERID^. 

 Sub-family Venerina. 

 Genus Venus. 

 Venus For dii, L. G. Yates, (nov. sp.) PI. j. Figs. 1-5. 



SHELL thick,- solid, ovate, tumid, truncated at 

 point, exterior light brown; beaks projecting to 

 front of the shell, much elevated and curved, making 

 more than half a turn forwards and inwards; lunule 

 rough, much depressed, heart-shaped, bounded by an 

 impressed line; ligament not large, but nearly hidden 

 in the depression between the elevated beaks; surface 

 with concentric rounded ridges and grooves, marked 

 on the surface by minute concentric lamiiue, about one 

 third of a millimeter apart, forming a chalky covering 

 to the shell; the entire surface of the shell is further 

 marked by fine, but somewhat irregular radiating lines 

 and corresponding depressions a little less than a milli- 

 meter apart; these lines art more distinctly shown on 

 the anterior portion of the shell; margins finely crenu- 

 lated; young shells are of a dirty yellowish white, and 

 mature shells which have become divested of the chalky 

 exterior are of a yellowish brown color, and together 

 with the young shells are marked with four radiating 

 rows of chocolate colored blotches. 



Size of largest shell in writer's collection 2 ^/g'inches 

 long, 2 y% inches high and 2 inches in width. 



I take pleasure in dedicating this shell to Mr. H. C. 

 Ford, who has for many years presided at the meetings 

 of our Society of Natural History. 



Family CERITHIID^. 

 Genus Cerithium. 



