108 U. S. BUREAU OF FISHERIES 



757. Thoburnia rhothceca (Thohurn). 



Headwaters of Tennessee River. 



Catoslomus rhotho'cus Thoburn, in Jordan and Evermann, Fishes North 



and Mid. Amer., 1896, 181, upper tributaries of Tennessee River; 



supposed to bo from the French Broad River at Wolf Creek, Tenn. 



Genus 282. CHASMISTES Jordan. 



Chasmistes Jordan, Bull., Hayden's Geol. Surv. Terr., IV, No. 2, 1878, 



417 {C. fecundus Jordan; not Catostomus fccundus Cope and Yarrovv = 



Chasmistes liorus Jordan). 

 Lipomyzon Cope, Amer. Nat., XV, ISSl, 59 {Chasmistes brevirostris 



Cope). 

 Piihecomyzon Fowler, Proc. Acad. Nat. Sci. Phila., LXV, 1913, 54 



{Chasmistes cnjvs Cope). 



Subgenus LIPOMYZON Cope. 



758. Chasmistes fecundus (Cope and Yarrow). Webug sucker. 



rtali Lake. 



Catostomus fecundus Cope and Yarrow, Wheeler's Surv., Zool., V, 1875, 

 678, l^tah Lake. 



759. Chasmistes brevirostris Cope. 



Klaniatli Lake, Orcg. 



Chasmistes brevirostris Cope, Amer. Nat., XIII, 1879, 785, Klamath 

 Lake, Oreg. 



760. Chasmistes stomias Gilbert. 



Upper Klamatli Lake, Orcg. 



Chasmistes stomias Gilbert, Bull., U. S. Fish Com., XVII, 1897 (1898), 

 5, te.\t figure. Upper Klamath Lake, Oreg. 



761. Chasmistes liorus Jordan. June sucker. 



Utah Lake. 



Chasmistes liorus Jordan, Bull., U. S. Nat. Mus., XII, 1878, 249, Utah 

 Lake at Provo, Utah. 



762. Chasmis es cujus Cope. Couia; Ku^eewce; Quiwee. 



Pvramid Lake, Nevada; locallv alnindant. 



Chasmistes cujus Cape, Proc. Acad. Nat. Sni. Phila., XXXV, 1883, 149, 

 Pyramid Lake, Nev. 



763. Chasmistes copei Evermann and Meek. Tsuuim. 



Klamath Lakes, Oreg. 



Chasmistes copei Evermann and Meek, Bull., U. S. Fish Com., XVII, 

 1894 (1898), 70, fig. 3; Pelican Bay, Upi)>n- Klamath Lake, Orcg. 



Genus 283. DELTISTES Seale. 



Ddtistrs Seale, Proc. Calif. Acad. Sci.. scr. 2, VI, 189G, 269 {Chasmistes 



liixiitus ('()))e). 



764. Deltistes luxatus ((-ope). Tswam; Lost River sucker. 



Klamath Lake and River, Oreg; abundant. 



Chasynistes luxatus Cope, Amer. Nat., XIII, 1S79, 784, Klamath Lake, 



Oreg. 

 Catostomus rex Eigeiuiiann, loc. cit., XXV, July, 1891, ()()7, Lost River, 



Orcg. 



Genus 284. XYRAUCHEN Eigenmann and Kirsch. liazorback suckers. 

 Xyrauchen Eigenmann and Kirsch, Proc. U. S. Nat. Mus., XI, 1888, 

 556 {Catostomus cypho Lockington = Ca<o.sioTOUs texanus Abbott). 



765. Xyrauchen texanus (.\bbott). Razorback sucker; Humpback sucker. 



Basin of tlu! Coh)rado and Gila Rivers (not in Texas). 



Catostomus texanus ,\bl)ott, Pnjc. Acacl. Nat. Sci. Phila., XII, 1860, 



473, Colorado and New Rivers, Ariz. 

 Catostomus rypho Lockington, loc. cit., 1880, 237, Colorado River at 



moiitii of the (Jila, Ariz. 

 Xyrauchen uucompahgre Jordan and Evermann, Bull. U. S. Fish Com., 



1889, 26, Uncompahgre River delta, Colo.; young example, probably 



the .same. 



Genus 285. ERIMYZON Jordan. Chub suckers. 



Erimyzon Jordan, Bull. Buffalo Soc. Nat. Hist., Ill, 1876, 95 {Cyprinus 

 oblongus Mitchill). 



