147 



81. HYBORHYNCHUS Agassiz, 1855. 



269. H. notatiiS (Raf.) Ag. Ohio Valley to New York, and West. 



270. H. supercilioSHS Cope. Ohio Valley and North, d.s. 



271. H. ni^ellus Cope. Arkansas River, Col. 



272. H. siderius Cope. Arizona. 



273. H. i)erspicuus Grd. Arkansas River, d.a.g. 



274. H. coufertus Grd. Texas, d.a.g. 



82. COCHLOGNATHUS Baird and Girard, 1854. 



275. C ornatus B. and G. Rio Grande. 



83. CODOMA Girard, 185G. 



276. C ornata Grd. Chihuahua River. 



277. C. vittata Grd. New Mexico. 



84. HYBOGNATHUS Agassiz, 1855. 



278. H. nuchalis Ag. Ohio Valley to Colorado. 



279. H. argyritis Grd. New Jersey to North Carolina; west to Arkansas- 



85. COLISCUS Cope. 1873. 

 380. C parietalis Cope. Missouri River, Mo. 



86. CLIOLA Girard, 1856. d. g. 



281. C. Tigilax (B. and G.) Grd. Red River. 



282. C. velox Grd. San Antonio River. 



283. C. Tivax Grd. Texas, d. s. 



87. DIONDA Girard, 1856. d. g. 



284. D. episcopa Grd. Texas. 



285. D. argeutosa Grd. Texas, d. s. 



286. D. serena Grd. Texas, d. s. 



287. D. chrysitis Grd. Texas, d. s. 



288. D. melanops Grd. Coahuila. Texas, d. s. 



289. D. couchii Grd. New Leon. d. s. 



290. D. texensis Grd. Texas, d. s. 



291. D. papalls Grd. Texas, d. s. 



292. 1). plumljea Grd. Canadian River, d. a. 



293. D. spadicea Grd. Arkansas, d. s. 



294. D. grisea Grd. Indian Territory, d. s. 



88. ERICYMBA Cope, 1865. 



295. E. buccata Cope. Pennsylvania to Illinois and Tennessee. 



