JORDAN: CATALOGUE OF FRESH-WATER FISHES. 417 



21. — *OHASMrsTES Jordan, gen. nov. 1878. Big-mouthed Suckers. 



83. Chasmistes fecundus (Gope & Yarrow) Jordan. Utah Basin. 



22. — Eeimyzon Jordan. 187G. Chub Suckers. 



84. Erimyzon sucetta (Lac.) Jordan. New England to Minnesota, Flor- 



ida, and Texas. {U. oMongus, gibbosus, tenuis, claviformis, etc.) 



23.— MiNYTREMA Jordau. 1878. Striped Suckers. 



85. Minytrema melanops (Eaf.) Jordan. Great Lake Eegion to Florida 



and Texas. 



24. — Myxostoma Eafinesque. 1820. Eed Horse. 



{Teretulus Raf., 1820 ; Ptycliostomus Agassiz, 1855.) 



SQ. Myxostoma papillosum (Gope) Jor. North Carolina to Georgia. 



87. Myxostoma coregonus (Gope) Jor. North Carolina. 



88. Myxostoma indiejise {Cope) Jor. Great Pedee Eiver. 



89. Myxostoma congestum (Grd) Jor. Missouri to Texas. (P. hucco Cope.) 



90. Myxostoma velatum (Eaf.) Jor. Pennsylvania to Georgia and Min- 



nesota. (P. collapsus Gope.) 



91. Myxostoma album (Gope) Jor. North Carolina. 



92. Myxostoma thalassinum (Gope) Jor. North Carolina. 



93. Myxostoma carpio (Val.) Jor. Ohio Valley and Upper Great Lakes. 



94. Myxostoma maorolepidotum (Le S.) Jor. Great Lake Eegion and 



Pennsylvania to Arizona and south. (C duquesnii Le S. ; G. 

 erythrurus Eaf.) 



95. Myxostoma aureolum (Le S.) Jor. Great Lake Eegion ; Upper Missis- 



sippi and north. 



96. My xostoina anisunim(Ra,t) Jor. OhioYalley. {P. hrcviceps Gope.) 



97. Myxostcma crassilahre (Gope) Jor. North Carolina 



98. Myxostoma conus (Gope) Jor. North Carolina. 



99. Myxostoma euryops Jordan. Alabama Eiver. 



100. Myxostoma pcecilurum Jordau. Louisiana. 



101. Myxostoma albidum (Grd.) Jor. Texas. 



102. Myxostoma cervinum (Cope) Jor. Virginia to Georgia. 



25. — Placopharynx Cope. 1870. Big-jawed Suckers. 



103. Flaeopharynx carinatus Gope. Great Lake Eegion and Upper 



Mississippi Valley. 



* This genus is distinguished from Catostomus by the very large, terminal mouth, the 

 lower jaw being very strong, oblique, its length about one-third that of the head. 

 The lips in Chasmistes are little developed, and are very nearly smooth. The type of 

 the genus is C. fecundus Cope & Yarrow. It will be elsewhere fully characterized. 



