46 



VERTEBRATE ANIMALS OF THE UNITED STATES 



T. crescentis Jordan & Beardslee. Similar to T. gairdneri; color 

 very dark blue; spots not numerous; a large black blotch on the cheek: 

 Crescent Lake, Washington. 



T. bathxcetor Meek. Length 600 mm.; head ^.^■, depth 5.5; scales 

 150; rays of dorsal lin 10; anal 11; color blue; spots numerous; form 

 slender: Crescent Lake, Washington, in deep water. 



T. irideus Gibbons. Rainbow trout (Fig. 22). Length 375 mm. or 

 more; weight about 3 lbs.; head 4; depth 3.8; rays of dorsal hn 11 ; anal 

 10; scales 21-135-20; color bluish above; sides silvery, with a broad pink 

 lateral band; back profusely spotted: in mountain brooks of the Coast 

 Range of California. 



Fig. 22. — Triilta irideus (front Jordan &= Evermann) . 



T. shasta Jordan. Rainbow trout. Similar to T. irideus; colora- 

 tion rather dark; spots extending at least to the lateral line; scales 145: 

 streams of the Sierra Nevada from Mount Shasta southward; the usual 

 rainbow trout of the fish culturists, which has been introduced exten- 

 sively into the eastern States. 



T. gilberti Jord. Similar to T. irideus; scales 165; back and sides 

 profusely spotted: Kern River, California. 



T. stonei Jord. Similar to T. irideus; size much larger; scales 155; 

 spots few, mostly on the hinder part of the body: upper Sacramento 

 basin, 



T. agua-honita Jord. Similar to T. irideus; size very small; scales 

 175; sides and belly golden; spots few: south Fork of the Kern River, 

 California. 



T . roosevelti 'Ewtxvad.nn. Golden trout. Length 30 mm.; head 3.5; 

 depth 4; rays of dorsal fins 11; anal 11; scales 200; color olive above, 

 golden yellow below the lateral line ; a broad rosy lateral band crossed 

 by ID black blotches and a midventral red stripe present; lower fins 

 red; dorsal and caudal fins and tail alone spotted: Volcano Creek, Kern 

 River basin, California. 



