78 



BULLETIN OF THE BUREAU OF FISHERIES. 



Scales large and deeply embedded ; pores in lateral line 1 20 ; series of scales above lateral line, counting 

 vpward and forward to a point just before dorsal, 29. Scales of nape minute and closely crowded as are 

 those of throat and abdomen. Axillary scales of ventral small, equal in length to vertical diameter of 

 eye; sharply pointed. Dorsal rays, 11; edge of fin concave. Adiposedorsal very large, broad, and thick. 

 Caudal broad and strong, the posterior edge slightly concave, the lower lobe a little longer than the upper. 

 Anal rays 11, edge of fin somewhat concave. Pectorals strong and rather pointed. Ventrals obtusely 

 pointed. 



In alcohol the body is dark brownish or olive, somewhat lighter below. There are very few spots 

 on upper part of head; middle of back from occiput to dorsal without spots; upper half of body with 

 large, elongate, sometimes nearly rectilinear spots of somewhat irregular outline, which grow larger 

 posteriorly; dorsal with about 10 rows of oval spots; caudal covered with elongate spots some of which are 

 connected ; anal spotted ; pectorals with a row of spots along first ray ; ventrals immaculate ; adipose dorsal 

 with six round spots. 



In life the body above and down the sides nearly to the lateral line was a rich dark olive, each scale 

 brassy and showing very conspicuously. Sides from just above the lateral line downward and including 

 the ventral surface deep coppery red with bright metallic reflections. Upper part of head like the body; 

 sides of head cherry red, very rich in color; throat and chin dusky, but with a trace of red beneath the 

 mandibles. Iris brassy. Pectorals dusky, broadly and ver>' conspicuously edged above with olive. 

 In life the spots were similar to those of the preserved specimen, dense black. 



A female of exactly the same length is somewhat deeper, and has a smaller head and shorter maxillary. 

 The color is very different. The spots are somewhat larger and more numerous, and they extend down- 

 ward on the sides far below the lateral line. In life the female was light olive above, each scale being 

 silvery with greenish reflections; sides lighter, the scales reflecting a more intense green, the ventral 

 surface silvery with a pinkish tint. A very indistinct pale reddish lateral stripe extends along the side 

 of body, mostly below the lateral line. A narrow, deep green stripe, two scales wide along the lateral 

 line. Dorsal surface of head like the back. Cheeks and opercles reddish. Iris orange. Dorsals and 

 caudal olive. Pectorals dusky, distinctly edged with olive on the first ray. Ventrals and anal suffused 

 with red and very distinctly edged with the same. 



A large school of this species consisting of about 40 individuals of both sexes was observed loitering 

 in the deep channel leading to the mouth of Pine Creek, which was then almost dry (May 27, 1913). 

 Through the clear water they were seen to be remarkably uniform in size and color, the males being 

 easily distinguished by their deep, coppery sides and rich red cheeks. Several dead specimens along 

 the shore were of the same size as those secured. 



The flesh of this trout is deep red, very firm and fatty, far superior to that of the Tahoe trout. 



It is said that anglers do not succeed in catching trout in Eagle Lake, their failure being attributed 

 to either a scarcity of fish or an abundance of food. 



Numbers are killed each year by certain settlers in the neighborhood, who take advantage of the 

 annual spawning migration which occurs early in May, when apparently the entire trout population of 

 the lake attempts to move up Pine Creek, the only tributary. This annual carnage, which of recent 

 years has taken nearly every fish that entered the creek, was indulged in by the Indians long before the 

 whites appeared. If continued by deadly methods recently adopted here, it will surely result in the 

 complete extermination of the species unless perchance a few small individuals succeed in breeding 

 in Pine Creek. In extenuation of this imsportsmanlike and destructive practice tlie plea is offered that 

 many of these fishes are often stranded and perish on the meadows after a sudden fall in the water of the 

 creek, and that at times large numbers never reach the spawning grounds, and also that numbers fail 

 to rettuTi to the lake. 



Measurements op Salmo aquilarum, Eagle Lake, Cal. 



Length of body mm 



Length head 



Depth body 



Depth caudal pcdimcle. . . 



Length caudal peduncle 



Length snout 



Length maxillary 



Diameter eye 



Interorbital width 



Depth head 



Snout to occiput 



Snout to dorsal 



Snout to ventral 



Length base of dorsal 



Length of body mm. . 



Length base of anal 



Height dorsal 



Height anal 



Length pectoral 



Length ventral 



Length caudal 



Dorsal rays 



Anal rays 



Gillrakers 



Scales lateral scries 



Scales above lateral line 



Branchiostegals 



466 



9 



0. 10 

 .14 



.145 



•175 

 •135 

 .18 



10 

 10 

 19 

 137 

 33 



