56 



VERTEBRATE ANIMALS OF THE UNITED STATES 



and the Great Lakes to southeastern Oregon and the upper Columbia, 

 and northward to Alaska; abundant northward; spawning in spring; 

 of some food value. 



C. taJioensis Jordan. Red sucker. Similar to C. catostomus, but 

 with 83 to 92 scales in the lateral line and a stouter body: region of 

 Lake Tahoe; very abundant. 



C. occidentalis Ayres. Length 250 mm.; head 4.5; depth 5; body 

 slender; color dark above; dorsal fin with 12 to 14 rays; scales 13-75-10, 

 40 before the dorsal fin; middle California; common. 



Fig. 27. — CatasloniHS commersoni {from Jordan cr= Evermann). 



C. mniotiltus Snyder. Length 200 mm.; head and depth 4.8; rays 

 of dorsal fin 12; anal 7; scales 57: Monterey County, California. 



C. macrocheilus Girard. Length 150 mm.; head 4; depth 5; color 

 dark, with a darker lateral stripe; rays of dorsal fin 12 to 14; anal 7; 

 scales 12-72-10; head large; upper lip with 6 to 8 rows of papillae: 

 Oregon and Washington, into Montana; common. 



C. commersonii (Lacepede). Common sucker (Fig. 27). Length 

 450 mm.; head and depth 4 to 5; color olivaceous; rays of dorsal fin 

 12; anal 7; scales 10-55 to 70-9; mouth large; upper lip narrow, with 3 to 

 5 rows of papillae: Maine, Valley of the St. Lawrence and Great Lakes 

 to Montana; northward to New Brunswick, Labrador and Hudson 

 Bay; southward into Georgia and Missouri; very common in small 

 streams and ponds; a good food fish. 



C. ardens Jordan & Gilbert. Similar to C. commersonii, but with a 

 larger mouth and lips; scales 12-70 to 72-12: Great Basin of Utah; 

 very common. 



C. snyderi Gilbert. Length 500 mm.; head 4.5; depth 4; color 

 dusky; belly white; rays of dorsal fin 11; anal 7; scales 13-70-11: 

 Klamath Lakes region. 



