Name. 143. Abeona minima (Gibbons) Gill 144. Abeona aurora J. & G 145. Cymatogaster aggregatus Gibbons. 146. Brachyistius frenatus Gill 147. Brachyistius rosaceus J. & G 148. Holconotus analis (A. Agassiz) J. & G 149. Holconotus argenteus (Gibbons) J. & G. 150. Holconotus agassizi (Gill) J. & G 151. Molconotus rhodoterus Ag... 152. Amphistichus argenteus Ag. 153. Hypsurus caryi (L. Agass.) A. Agass 154. Ditrema jacksoni (Agass.) Günther 155. Ditrema laterale (Agass.) Günther 156. Ditrema atripes J. & G 157. Ditrema furcatum (Grd.) Gthr 158. Damalichthys argyrosomus (Grd.) J. & G. 159. Rhacochilus toxotes Agass + :: +++: + +: + ++ ++++ ++ + + ++ : ++ ++ + ++ ++ + :: *We are informed by Dr. Günther that the pharyngeals in Ditrema temmincki are of the normal type as in Embiotoca. Ditrema is therefore identical with Phanerodon Grd,, and no character of importance distinguishes "Phanerodon" from Embiotoca. Embiotoca argyrosoma Grd, is identical with Damali. chthys vacca. +Ephippus zonatus Grd. Umbina undulata Steind., non Grd. & Umbrina elongata Gthr. Otolithus californiensis Steind. Otolithus magdalenæ Steind. ** Seriola mazatlana Steind. #Oreynus pacificus Cooper. $5 Chriomitra concolor Lock.; Chriomitra Lock.=Cybium C. & V. Scomberomorus Lac. Scomber diego Ayres. Name. Greatest abundance. 193. Mugil mexicanus Steind. 194. Tylosurus exilis (Grd.) J. & G 198. Cyprinodon californiensis Grd. 200. Myctophum procellarum Bean Mss 205. Alepidosaurus borealis Gill. 206. Osmerus thaleichthys Ayres. 208. Hypomesus olidus (Pallas) Gill. 213. Salmo gairdneri Rich 214. Oncorhynchus kennerlyi (Suckl.) Jor 215. Oncorhynchus gorbuschat (Walb.) Gill & Jor. 220. Stolephorus ringens (Jenyns) J. & G 223. Clupea sagax Jenyns 224. Clupea mirabilis Grd 225. Albula vulpes (L.) Goode. +:+ +++ + *Salmo spectabilis Grd.; Salmo bairdi, etc., Suckley; Salmo callarias Pallas. Salmo sanguinolentus Pallas; Salmo tsuppitch Rich.: Salmo scouleri Suckl. Salmo lagocephalus Pallas; Salmo canis Suckl. Acipenser brachyrhynchus et acutirostris Ayres. Acipenser acutirostris Gthr. Raia birostris Walb.; Manta americana Bancroft; Ceratoptera vampyrus Auct. #Raia binoculata Grd.=yg. of Raia cooperi Grd. +: ON THE GENERIC RELATIONS OF BELONE EXILIS GIRARD. By DAVID S. JORDAN and CHARLES H. GILBERT. The "needle-fish” (Belone exilis Girard), of the California coast, differs from the type of the genus Belone in the development of the gill-rakers. In Belone vulgaris the gill-rakers are well developed, long, and slender, and a patch of teeth is present on the vomer. In Belone exilis the gillrakers 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 melanochira Poey, Belone notata Poey, and Belone hians (Cuv. & Val.), and probably also in Belone cantraini, which is the type of the genus Tylosurus 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 Tylosurus was based, and which is developed in T. exilis as in T. cantraini, has apparently no systematic importance. BLOOMINGTON, IND., December 2, 1880. NOTES ON A COLLECTION OF FISHES FROM UTAH LAKE. By DAVID S. JORDAN and CHARLES H. GILBERT. 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 different species, presented to the United States National Museum by Peter Madsen and 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 Cottopsis asper, from which C. semiscaber differs chiefly in the less number of rays in the vertical fins. The genus Cottopsis is distinguished from Centridermichthys mainly by the absence of a slit behind the fourth gill, which, as I am informed by Dr. Günther, is present in Centridermichthys fasciatus. Centridermichthys uncinatus, of the North Atlantic, agrees with Cottopsis in this respect, and should probably be referred to it. The American genera of Cot toids may be divided into two series, on the presence or absence of this slit, as follows: 2. Coregonus williamsoni Grd.-Mountain Herring. Very abundant. 3. Salmo purpuratus Pallas.-Lake Trout; Brook Trout. (Salmo clarki Rich.) Very abundant in Utah Lake; a food-fish of much value. Specimens obtained do not differ in any visible respect from others taken in salt water in Puget Sound. This is apparently the parent stock from which S. spilurus, S. irideus, and S. gairdneri Rich., (S. truncatus Suckley) have scarcely yet become completely differentiated. S. henshawi Gill & Jor. is a marked local variety of S. purpuratus. 4. Squalius tænia (Cope) J. & G.-Leather-side Minnow. Very abundant. We find it impossible to separate the genera Squalius, Telestes, Tigoma, Siboma, Cheonda, and Clinostomus, and we adopt for the whole group the name of Squalius. The genus Dobula was established by Rafinesque in the Ichthyologia Ohiensis (1820, p. 45). Although no type is stated, it was probably based on the Cyprinus dobula L., afterwards the type of Squalius Bonaparte. 5. Squalius montanus (Cope) J. & G. Also abundant. 6. Squalius cruoreus, sp. nov. Allied to Squalius ardesiacus Cope, but with larger scales and shorter head. * We are unable to perceive any distinction between the Psychrolutida and the Cottida. Psychrolutes has a rudimentary spinous dorsal, hidden in the loose skin. + In Cottus grænlandicus, polyacanthocephalus, and scorpius a small pore is present behind the last gill. In other species (octodecimspinosus æneus, scorpioides), the slit appears to be wholly obliterated. In a specimen of C. polyacanthocephalus of about two feet in length there is visible a minute pore representing the usual last slit. |