104 U. S. BUREAU OF FISHERIES 



723. Carpiodes elongatus Meek. 



Streams of the east coast of Mexico. 



Carpiodes elongatus Meek, Field Col. Mus., Zool., V, 1904, 28, fig. 5, 



Rio San Juan, Rio Conches, and Rio Sarto Maruta in Tamaulipas, 



Linares, Nueva Leon. 



724. Carpiodes microstomus Meek. 



Tril:)vitaries of the Rio Grande, on the Mexican plateau. 

 Carpiodes microstomus Meek, Field Col. Mus., Zool., V, 1904, 27, fig. 

 4, Rio Conchos in Chihuahua. 



725. Carpiodes meridionalis (Giinther). 



Southern Mexico and Guatemala. 



Sclerognathus meridionalis Giinther, Cat., VII, 1868, 23, Rio Usuma- 

 cinta, Guatemala. 



Genus 277. NOTOLEPIDOMYZON Fowler. 



Notolepidomijzon Fowler, Proc. Acad. Nat. Sci. Phila., LXV, 1913, 47 

 {Pantosleus arizonw Gilbert =^Catosto mus clarki Baird and Girard). 



726. Notolepidomyzon plebeius (Baird and Girard). 



Basin of the Rio Grande, Colorado to Chihuahua; Rio Piedras, Rio 



Casas Grandes; very common. 

 Cainstomus plebeius Baird and Girard, Proc. Acad. Nat. Sci. Pliila., 



VII, 1854, 28, Rio Mimbres, a tributary of Lake Guzman, Chihuahua, 

 Mexico. 



Catostomus (Acom,us) guzmaniensis Girard, loc. cit., VIII, 1856, 173, 

 Rio Janos, tributary to Lago de Guzman, Chihuahua, Mexico. 



Catostovius nebulifcrus Garman, Bull Mus. Comp. Zool., VIII, 1881, 

 89, Rio Nazas, Coahuila, Mexico. 



727. Notolepidomyzon clarkii (Baird and Girard). 



Rio Gila, Salt River, and their tributaries in Arizona. 



Catostomus clarkii Baird and Girard, Proc. Acad. Nat. Sci. Phila., VII, 



1854, 27, Rio Santa Cruz, Gila Basin, Ariz. 

 Pantosteus arizonx Gilbert, in Jordan and Evermann, Fishes North 



and Mid. Amer., 1896, 170, Salt River, Tempe, Ariz. 



728. Notolepidomyzon santae-anae (Snyder). 



Streams of southern California. 



Pantosteus sanlse-anx Snyder, Proc. U. S. Nat. Mus., XXXIV, 1908,' 

 33, Santa Ana River, at Riverside, Calif. 



729. Notolepidomyzon generosus (Girard). Mountain sucker. 



Colorado Basin. 



Catostomus {Aco7nus) generosus Girard, Proc. Acad. Nat. Sci. Phila., 



VIII, 1856, 174, Cottonwood Creek; not in Utah, "no doubt from 

 Colorado" (Snyder). 



Genus 278. PANTOSTEUS Cope. Mountain suckers. 



Pantosteus Cope, Wheeler's Surv., V, 1875, 673 {Minomus platijrhynchus 

 Cope). 



730. Pantosteus delphinus (Cope). Bluehead sucker. 



Mountain streams tributary to the Colorado River in western Colorado 



and Wyoming; very abundant. 

 Minomus delphinus Cope, Hayden's Geol. Surv. Wyo., 1870, 435; 



•probably Henry Fork of Green River, Wyo. 

 ^Minomus bardus Cope, loc. cit., 436; probably Green River, Wyo. 



731. Pantosteus platyrhynchus (Cope). 



Streams of Utah Basin (Provo and Sevier Rivers). 



Minomus platyrhynchus Cope, Proc. Am. Phil. Soc, XIV, 1874, 134, 



Utah Lake at Provo. 

 ? Minomus jarrovii Cope, loc. cit., 135; "near Provo"; the type lost. 



732. Pantosteus jordani Evermann. 



Upper Missouri and Columbia River Basins. 



Pantosteus jordani Evermann, Bull. U. S. Fish Com., XII, 1892 (Jan. 



27, 1893), 51, fig. on p. 53; Whitevvood Creek and other streams of 



the Black Hills, S. Dak. 



