424 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



267. Gila vandoisiila(V8Ll.) Jot. Virginia to Georgia. {C. affinis Grivard.) 



268. Gila phlegethontis Cope. Beaver Eiver, Utah. 



269. Gila Montana Cope. Idaho to Arizona. 



270. Gila hydrophlox Cope. Idaho. 



271. Gila taenia Cope. Utah. 



272. Gila ardesiaca Cope. Eocky Mountain Eegion 



§ Tigoma Girard. 1856^. 



273. Gila gula Cope. New Mexico. 



274. Gila pandora Cope. New Mexico 5 Colorado. 



275. Gila Jmmholdti (Grd.) Cope. Nevada. 



276. Gila egregia (Grd.) Cope. Colorado; Utah; New Mexico. 



277. Gila nigra Cope. Arizona. 



278. Gila pulchella B. & G. Mexico. 



279. Gila conformis (B. & G,) Jor. San Joaquin Valley. 



280. Gila hicolor (Grd.) Jor. Klamath Lake, Oregon, {d. s.) 



281. Gila purpurea (Grd.) Jor. San Bernardino, Mexico, {d. s.) 



282. Gila intermedia (Grd.) Jor. Gila Basin, {d. s.) 



283. Gila obesa (Grd.) Jor. Salt Lake Valley, {d. s.) 



284. Gila lineata (Grd.) Jor. Utah. {d. s.) 



285. Gila utensis Jor. Utah. {Tigoma gracilis Grd.) {d. s.) 



286. Gila nacrea Cope. Colorado Basin, Wyoming. 



287. Gila seminuda Cope & Yarrow. Eio Virgen, Utah. 



288. Gila houcardi (Gthr.) Jor. Mexico, {d. s.) 



§ Gila. 



289. Gila roMsta B. & Gr. Arizona; New Mexico. 



290. Gila grahami B. & G. Arizona ; New Mexico. 



291. Gila gracilis B. & G. Arizona. 



292. Gila elegans B. & Gr. Arizona; New Mexico. 



293. Gila emorii Grd. Gila Eiver. 



294. Gila affinis Abbott. Platte Eiver. {d. s.) 



§ rtychochilus Agassiz. 1855. 



295. Gila oregonensis (Eich.) Jor. Oregon and north. 



296. Gila grandis Ay Tes. California. 



297. Gila lucius (Grd.) Jor. Eio Colorado, 



298. Gila rapax (Grd.) Jor. California. 



299. Gila vorax (Grd.) Jor. Utah. {d. s.) 



50.— SiBOMA Girard. 1856. 



300. Siboma crassicauda Grd. California. 



301. Siboma atraria Grd. Idaho to New Mexico* 



