Vol. XXII, pp. 185-188 December 8, 1909 PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON dp:scriptions of three new species of CYPRINOID fishes. BY BARTON WARREN EVERMANN AND THEODORE D. A. COCKERELL. Ill tlie course of some work on the scales of the Cyprinido?, a few species were found which seem to he new. Three of these are here described; others need to be further elucidated, both as to the constancy of their characters noted, and as to their possible reference to names now placed in synonymy. The types of the species here described have been deposited in the United States National Museum. Richardsonius thermophilus pp. nov. Type, No. 64152, U. S. Nat. Mas., a specimen (18 mm. long. Type Locality. — Warm Springs, Harney Co., Oregon. Collector, Prof. John 0. Snyder, for tlie U. S. Bureau of Fisheries. Head 4 in length; depth 4; eye 3.3 in head; snout 4; maxillary 2.75; dorsal 10; anal 11; scales 12-5(3-7. Form essentially as in R. balteatus; snout veryohtuse; scales with very strong circuli. Color (in alcohol). — Scarcely silvery; back and upper half of side finely punctulate and dark grayish, under parts straw color; peritoneum not silvery, but with large and close diffuse brownish sjiots.* This fish has been discussed by Prof. J. 0. Snyder in Bull. Bureau of Fisheries, XXVH (1907), p. 85. The following description of its colors is given by him : " Dorsal surface of bocly deep green; a narrow, diffuse, brassy stripe extending from eye along lateral line, falling below it posteriorly, form-ing a ventral border to the greenish dorsal area; an indistinct dark greenish stripe extends from eye along the side just below the brassy band; breast and abdomen silvery; sides just below greenish band bright *This is probably not a direct effect of the local environments; for Rutilus columbi-aiuts, from the same Warm Springs, has the peritoneum thickly beset with stellate brown spots, and sprinkled with black dots. 30— Proc. Biol. Soc. Wash.. Vol. XXII, 1909. (185)
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