230 FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. i. 



nearly white on the belly. Back sides and head profusely spotted 

 with black. Some specimens have black spots on the belly and 

 on all fins. Usually the pectorals and ventrals are without spots. 

 Upper half of lower jaw black, red under dentary bones. The 

 life colors are given below by Professor Elliot. 



Named for Dr. D. S. Jordan, President of Stanford University, 

 who, more than anyone else, has studied our western trout. 



"This beautiful species is exceedingly gamey, takes a fly read- 

 ily even as late as October, is a great leaper when hooked, and 

 fights a F entrance. In appearance it resembles S. g. crescentis of 

 the neighboring lake, being fully as brilliantly colored, but can 

 be at once distinguished by its orange or orange-red fins, red 

 on the jaw, and the number and blackness of its spots, and 

 darker back and top of head. In general appearance there 

 is not the slightest similarity between this species and the speci- 

 men from Boulder Creek. At no stage of its existence that I have 

 seen, from fingerlings to fish weighing over four pounds, is there 

 any silvery luster, but the colors are all bright hued, some even 

 metallic. It is one of the most active of its tribe, and I have 

 had them leap after taking the fly in such quick succession, and 

 with such rapid dartings about the lake, that it was impossible 

 to imagine where they would next appear. I believe it spawns 

 in the spring, as in the middle of October, when I left Lake 

 Southerland, the eggs of the females we caught were not enlarged, 

 and no indication of the approach of the spawning season." 

 (D. G. E.) 



Salmo clarki declivifrons, var. nov. 



Salmon Trout of Lake Southerland. One specimen from Lake 

 Southerland. 



Cat. No. 2006. Total length, 9. 64 inches; head, 3^; depth, 

 4^ ; eye, 5-*- in head; snout, 4^; mixillary, i ; scales, 148; 

 dorsal, 10 ; anal, u ; branchiostegals, 10; gill rakers, 7+ 10. 



Body elongate, back elevated, anterior profile much decurved, 

 especially so from nape forward. Tip of snout below axil of the 

 body ; margin of the upper lip on a level with lower margin of the 

 orbit ; gape of mouth nearly horizontal, more so than in other 

 trout ; maxillary broad, its greatest width 5 in its length, its pos- 

 terior border reaching beyond eye ; dentition strong ; posterior 

 margin of dorsal fin straight ; when the fin is depressed the tip 



