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ranged upstream to the foot of the Rockies in upper Colorado <br />_ tributaries. <br />Kobetich, G.C., and P.B. Holden. 1976. The rare fishes of the <br />Colorado River basin. Paper presented-W. Div. Am. Fish. <br />Soc., Sun Valley, ID. <br />(Not seen). Presumably gives distributional information on <br />Gila elegans and G. cypha. <br />Koster, W.J. 1957. Guide to the fishes of New Mexico. Univ. <br />New Mex. Press, Albuquerque. 116 p. <br />Makes no distinction between G. elegans and G. robusta, <br />treating both under the latter name, and gives no specific <br />locality information. Of no use as a guide. <br />McAda, C.W., C. Phillips, C.R. Berry, and R.S. Wydoski. 1977. A <br />survey of threatened and endangered fish in southeastern <br />Utah streams. Utah Coop. Fish. Unit Rpt., Logan. 245 p. <br />Provides valuable survey information on rivers of <br />southeastern and extreme southwestern Utah, including Green <br />River and tributaries from above the Price River to the <br />confluence with the Colorado, western tributaries to the <br />Colorado in Utah, and the upper Virgin River. A single <br />humpback-like chub specimen was reported from Desolation <br />Canyon and scattered specimens described as probable cypha X <br />elegans intergrades (but tabulated as robusta) were <br />collected in the reach from the town of Green River upstream <br />to Sand Wash. Gila robusta was reported from the Price, <br />San Raphael, Dirty Devel, and lower Fremont systems, but not <br />the Escalante (formerly present, Holden and Irvine, 1975) or <br />upper Paria systems. Gila r. seminuda extends into Utah in <br />the Virgin River system. <br />Miller, W.H., J.J..Valentine and H.M. Tyus. 1982. Colorado <br />River fishery project: final report summary. Pts. 1-3. U.S. <br />Fish & Wldf. Ser.-Bur. Reclam., Salt L. City, UT. 732 p. <br />A summary report containing also several separate reports <br />cited elsewhere herein. Reports the only major humpback <br />chub population as in the Black Rocks/Westwater canyons area <br />of the Colorado River; captures in Green River canyon areas <br />are termed "incidental". With regard to elegans, reports <br />confusing variant specimens from Green River localities with <br />a small number of specimens thought to represent typical <br />elegans from the Coal Creek Rapid area. <br />Minckley, W.L. 1973. Fishes of Arizona. Ariz. Game & Fish <br />28