28 



Evermann — A New Trout from Lower California. 



Comparative measurements of the type and 8 cotypes are given in the 

 following table: 



From the above table it may be seen that the characters of the species 

 are quite constant. There is some variation in color, the smaller exam- 

 ples being more fully spotted. I have been able to compare the Lower 

 California specimens with specimens of trout of the same size from the 

 Rio Grande and the Kern River region and with somewhat larger exam- 

 ples from the Colorado and Sacramento rivers. Compared with the Colo- 

 rado River trout (Salmo jjleuriticus), this species is found to differ in the 

 much larger eye, shorter, blunter and more rounded snout, much shorter 

 maxillary, rather more posterior position of the dorsal fin, the smaller 

 size of the spots on the body, the fewer spots below lateral line, and the 

 brightly colored tips of the dorsal, anal and ventral fins. From the Rio 

 Grande trout (Salmo spilurus),* it differs in the larger eye, shorter max- 

 illary, and in the coloration, which is markedly different. In the present 

 species, the spots on the back and upper part of side are irregular in shape 

 and closely placed; below the lateral line there are few, if any, spots, 

 except in the smaller individuals. The Rio Grande trout has the spots 

 on back and side more nearly round and regular in shape, and more 

 widely scattered, and there are similar spots, though less numerous, below 

 lateral line; and the dorsal, anal and ventrals are not tipped with white 



The present species belongs, however, to the Rainbow trout series and 

 is more closely related to the Kern River trout and the various species of 

 Golden trout of the Kern River region, agreeing with them in the small 

 scales, the position of the dorsal, and the bright tips to the dorsal, anal 

 and ventral tins. The black spots as to their character and distribution 

 resemble somewhat those of the Kern River trout, but even in this respect 

 the differences are marked. All the trout of the Kern River region have 

 the maxillary longer, the snout longer and more pointed and the fins 

 larger. 



Specimens of trout from coastal streams of southern California an' not 

 at hand and no direct comparison has been made between examples from 

 that region and the Lower California trout. 

 'Specimens of same si/.' from Del Norte, Colorado. 



