986 FISHES-—COTTIDA. 
157. TRIGLOPSI8S THOMPSONII. Girard. 
Lriglopsis thompsonii, GIRARD, Proc. Bost. Soc. Nat Hist., 1851, 19; Mon. Cottoids, 1851, 
65.— JORDAN, Man. Vert., 1876; Man Vert., 2d Ed., 1878, 256. 
Ptyonotus thompsonii, GUNTHER, Cat. Fishes Brit. Mus., ii, 1860, 175, 
Triglopsis stimpsoni, GILL, Mss. (no deseription published.) 
Pale olivaceous, with darker blotches; upper fins faintly banded; body elongate, very 
slender; bead long, depressed above; snout long and pointed ; eye quite large, nearly 
as long as snout, much wider than interorbital space, 4 in head; jaws subequal; mouth 
large, the maxillary extending rather beyond middle of eye; preopercle with 4 sharp 
spines, the u. per much shorter than pupil; cavernous structure of skull highly devel- 
oped; upper surface of the head smooth; gill-membranes not breacly united, nearly 
free from isthmus; dorsal fins well separated ; spinous dorsal short and low, its height — 
little more than length of snout; second dorsal very large, 3 times height of first, its 
longest rays about as long as head; ; anal high, half as high as second dorsal; pectoral 
long, reaching past frout of anal; ventrals well developed; |.teral line chain-like, con-— 
spicuous; skin Dae smooth; head 3; depth 6; D. VII-18; A 15; V.1, 3; Heong 
3 inches. 
Habitat, deep waters of the Great Lakes, Lake Michigan, Lake Ontario. This species 
inhabits somewhere in the depths of Lake Ontario, but has not yet been seen or caught 
alive either by fishermen or naturalists. The manner in which its discovery took plave 
is aS foilows: In opening the stomach of the Ling (Lota maculosa), the fishermen of 
Oswego, finding it almost constantly filled with that fish, had entertained the errone- 
ous opinicn that the Liog swallowed its progeny. Professor Baird, who visited that 
place in 1850, and heard the story, secured specimens, which at once enabled him 
to recognize in them a fish new to ccience, although half digested, the skin and the fins 
in must cases destroyed. In that state, when the head and budy alone have preserved 
their shape, the elongation of the former and the tapering head of the latter may re- 
mind superficial observers of the elongated head and the tapering body of Lota maculosa. 
Attention should be directed on ali fishi:g grounds of the Ling to the contents of the 
stoniachs of these fish, as at present the only way known of procuring Triglopsis. By 
this weans, at least, we should become acquainted with its geographic distribution, for 
mere remains, when they cannot be mistaken, are always sufficient to establish its 
occurrence at any given place, should complete and fresh specimens escape all researches. 
(Girard, Mon. Cottoids, 67.) 
-The specimens from Lake Michigan, to which the name of Triglopsis stimpsoni has been 
given, are not distinguishable from the original types of the species. 
GENUS 85. URANIDEA. DeKay. 
Cottus, sp., GIRAKD, 1851, and of early writers generally (not type). 
Uranidea, DEKayY, New York Fauna Fishes, 1742, 61. 
Coitopsia, GIRARD, Proc. Bost. Soc: Nat. Hist., iii, 1850, 303 (asper). 
Potamocottus, GitL, Proc. Bost. Soc. Nat. Hist., viii, 1861, 40 (punctulatus). 
Tauridea, JORDAN aud Ric#, Man. Vert. E. U. S., Ed. 2d, 1878, 245 (Geran) 
Type, Uranidea quiescens, DeKay =Cottus gracilis, Heckel. 
Etymology, ouranos, sky; éido, to gaze. 
Fresh-water Sculpins with body fusiform, little compressed ; head feebly armed, the 
