Vol. XXI, pp. 31-32 January 23, 1908 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 







DESCRIPTION OF A NEW SPECIES OF TROUT (SALMO 

 EVERMANNI) FROM THE UPPER SANTA ANA RIVER, 

 MOUNT SAN GORGONIO, SOUTHERN CALIFORNIA. 



BY DAVID STARR JORDAN AND JOSEPH GRINNELL. 



Stanford University. 



Salmo evermanni Jordan & Grinnell, sp. nov. 



Type. — Male, No. 20,389, Stanford University; collected by Joseph 

 Grinnell, August 17, 1907, in the headwaters of the South Fork of the 

 Santa Ana River, at 8,200 feet altitude, four miles northwest of San Gor- 

 gonio Peak, the highest mountain in southern California. Cotypes in the 

 U. S. National Museum anil the V. S. Bureau of Fisheries from the same 

 locality. 



Description of type. — Length of type, an adult male (as measured when 

 first caught), 11% inches (290 millimeters ) ; head measured along side 2% 

 inches (70 millimeters). Head S% in length to base of caudal, the jaws 

 being somewhat produced ; depth of body 4% ; eye b%. m head ; maxil- 

 lary \% in head; dorsal with 10 rays, anal with 10; 84 scales between 

 base of dorsal and lateral line, 107 oblique rows crossing lateral line, and 

 33 scales between lateral line and vent. Snout (from eye) '?>% in head; 

 anal 2 in head; ventral 2± in head; pectoral 1% in head; dorsal li in 

 head. Caudal distinctly emarginate, or lunate. Vomerine teeth in two 

 straight rows; hyoid teeth present, though buried in mucus; maxillary 

 extending well beyond eye, so that the mouth is relatively large. In the 

 female, the head is shorter and the mouth a little smaller; the maxillary 

 ] % in head. Coloration, very dark fawn-brown, the spots unusually large and 

 covering the whole length of the body, none of the brilliant hues of Salmo 

 agua-bonita, roosevelti or whitei, nor even the crimson of irideus. Ground 

 fawn-color along sides, varying toward seal brown dorsally ; a large patch 

 of same color on cheek; lower parts lighter (fresh tints unknown, but no 

 red in throat region shown in the specimens ) ; black spotting conspicuous, 

 the spots evenly distributed, very large, on sides posteriorly the size of pupil 

 or larger, smaller on top of head; 25 spots on dorsal fin, mostly in four 

 rows; caudal fin nearly as distinctly spotted as sides, with spots more 

 closely set. Younger individuals are somewhat lighter, but yet consider- 



4— Proc. Biol. Soc. Wash., Vol. XXI, 190S. (31) 



