270 CALIFORNIA ACADEMY OF SCIENCIilS. 



DESCRIPTION OF A NEW SPECIES OF CYPRINODON. 



BY C. H. & E. S. EIGENMANN. 



The new species of Cypinodoii described below was col- 

 lected in a liot spring locally known as "Saratoga Spring," 

 in the south arm of Death Valley, Inyo County, California. 



The types are in the collection of the California Academy 

 of Sciences. 



Cyprinodon nevadensis sp.u. 



Types No. 580. 3 specimens, .04-.044 m. W. H. Sbafer. 



Head 3i-3f (3M in total); depth 2f-2| (2|-3J); D. 10-11; 

 A. 11; Lat. 1. 26; tr. 9-10. 



Form of C. variegatus, the back in front of the dorsal 

 conspicuously broader and less trenchant. 



Eye 3-3| in the head, If-li in interorbital. 



Exposed portion of the humeral scale not larger than 

 some of the other scales. Intestinal canal little more than 

 twice the entire length. Origin of dorsal equidistant from 

 hase of caudal and middle of orbit or much nearer base oj 

 caudal. Base of dorsal little if any longer than snout and 

 orbit. Highest dorsal ray l|-2 in head. Caudal rather 

 broadly rounded 1| in head. Highest anal ray l|-2 in 

 the head. Ventrals very short, inserted in front of the 

 dorsal. 



Color in spirits, dark gray with an indistinct darker lat- 

 eral band, and indistinct lighter vertical streaks in the 

 female. Dorsal in the male almost uniform black; in the 

 female lighter with a blackish spot on its posterior rays. 

 Caudal margined with white, within which is a broader 

 blackish crescentiform band, most conspicuous in the male. 

 Pectorals, ventrals and posterior half of anal, blackish in 

 the male, light gray in the female. 



2d See. Vol. I. Issued Jan. 8, 1889. 



