1936] Schultz: Keys to Fishes 145 



11a. Species of the Columbia River and coastal streams 

 of Washington and Oregon except the Klamath ; 

 scales 12 to 16+65 to 79+8 to 10; scales before 

 dorsal 30 to 40; dorsal rays 12 to 15 ; caudal peduncle 

 very slender in young and half grown ; peritoneum 

 white to dusky, the color not showing through the 

 body wall in the young as observed in syncheilus. 

 Range : Puget Sound drainage, Columbia River, 

 Coasts of Oregon and Washington as far south as 

 the Sixes River, Oregon. Freshwater. Abundant. 



Coarse-scaled Sucker of Columbia River 



72. Catostomus macro chcilus Girard 



lib. Species of the Klamath River basin; scales 13 to 14 

 + 69 to 77+10 to 11 ; scales before dorsal about 32; 

 dorsal rays about 11; caudal peduncle not slender in 

 young and half grown. Range: Klamath Basin, Ore- 

 gon. Freshwater. Not common. 



Coarse-scaled Sucker of Klamath River 



73. Catostomus snyderi Gilbert 



lie. Species of the Goose Lake drainage and the Sacra- 

 mento River; scales 13 to 17 (usually 14 to 16) +62 

 to 75 (usually 64 to 72) +8 to 10; scales before dor- 

 sal 29 to 36; dorsal rays 11 to 15 (usually 12 or 13) ; 

 this species is very much like macrocheihis from 

 which it may not be distinct. Range : Goose Lake and 

 tributaries. Freshwater. Common. 

 Coarse-scaled Sucker of Goose Lake and Tributaries 

 ..74. Catostomus occidentalis lacus-anserimis Fowler 



10b. Scales in the lateral line 95 to 115; 18 to 21 scales 

 above and 15 to 18 scales below the lateral line; dorsal 

 rays 9 to 11; peritoneum dusky, seldom whitish, but 

 never jet black. Range: Upper portions of the Missouri, 

 Saskatchewan, and Columbia rivers. Freshwater. Com- 

 mon. 



Long-nosed Sucker 



75. Catostomus catostomus griseus Girard 



Family 30. Cyprinidae. Minnows. Dace. Chubs 



la. A spine, usually serrated, is developed at front of dorsal and anal fins ; the 

 dorsal fin is very long, usually the anterior rays much longer than those 

 behind middle of fin. 



2a. Barbels in 2 pairs on the side of the upper jaw. Range: Introduced into 

 North America. Freshwater. Abundant. 

 Common Carp 76. Cyprinus carpio Linnaeus 



2b. No barbels on the side of the upper jaw. Range: Introduced into North 

 America. Freshwater. Abundant. 

 Common Goldfish 77. Carassius auratus (Linnaeus) 



lb. No spines developed in the dorsal or anal fins ; sometimes in very large 

 specimens the first simple ray is very hard but it is not a sharp spine. 



