PROCEEDINGS OF UNITED STATES NATIONAL MUSEIBI. 459 ON THE CENERIC REL,ATION8 OF BEL,ONE EXir,lS GIRARO. By DAVID S. JORDAIV aud CHARLES H. OILBERT. The " needle-fish" [Belone exilis Girard), of the California coast, differs from the type of the genus BeJone in the development of the gill-rakers. In Belone vulgaris the gill-rakers are well develoj^ed, long, and slender, and a patch of teeth is present on the vomer. In Belone exilis the gill-rakers are entirely wanting, and there are no vomerine teeth. The gill-rakers are also wanting in the Atlantic species, Belone longirostris (Mitch.), Belone latimana Poey, Belone melanocUra Poey, Belone notata Poey, and Belone Mans (Cuv. & VaL), and probably also in Belone can-traini, which is the type of the gonus Tylosnrus Cocco. The generic name Tylosurus may therefore be provisionally adopted for the species of Belone without gill-rakers. The caudal keel on which the genus Tylo-surus was based, and which is developed in T. exilis as in T. cantraini, has apparently no systematic importance. Bloomington, Ind., December 2, 1880. NOTES OIV A COIiLiECTlON OF FIJiillES FROIU VTAII I.AKE. By DATID S. JORDAN and CHARLES H. OILBERT. A short visit to Provo, Utah, on Utah Lake, enabled one of the writers to make a small collection of the fishes of that locality. This collection has been since supplemented by an excellent series of the difierent spe-cies, presented to the United States National Museum by Peter Madsen aud sons, fishermen at Provo. Four of the thirteen species obtained seem to be new to science. 1. Cottopsis semiscaber Cope. — Bull-head. Two specimens. Professor Cope says of his types : " Skin prickly above the lateral line, smooth below it posteriorly." Our specimens are villous above and below, as in GoUopsis asper, from which C. semiscaber differs chiefly in the less number of rays in the vertical fins. The genus Cottopsis is distinguished from Centridermichthys maiuly by the absence of a slit behind the fourth gill, which, as I am informed by Dr. Giinther, is present in Centridermichthys fasciatus. Centridermichthys uncinatus, of the ISTorth Atlantic, agrees with Cottopsis in this respect, and should probably be referred to it. The American genera of Cot-
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