FISHES —COTTIDAE-COTTOPSIS GULOSUS. 
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with soft, very small warts. The abdominal region, an area adjoining the base of the anal and 
caudal, and the interscapular space in advance of the first dorsal, are perfectly smooth ; the 
skin covering the rest of the body is thickly studded with very small,, subulate, acute spines 
directed backwards. These spines are too minute to be seen with the naked eye, but will resist 
the finger when drawn against their points. 
The ground color of the upper and lateral regions is yellowish brown, with black dots and 
spots ; the head and fins being greyish white, with crowded spots and dots of black. The 
abdomen and inferior region of the head are whitish, with crowded black dots. 
The species inhabit the fresh waters of Oregon and Washington Territories. 
List of specimens. 
Catalogue numbers. 
Corresponding No. 
of. 
No. of specimens. 
Sex and age. 
287 
6 
Adt. 
288 
1 
do 
289 
1 
do 
Locality. 
Astoria, Oregon_ 
Fort Dalles, Oregon.... 
Ft. Steilacoon, Puget’s S' 
W. T.. 
When collected. 
Whence obtained. 
Original number. 
Nature of specimens 
Collected by— 
1855 
1856 
1856 
Lieut. Trowbridge... 
Governor Stevens_ 
Alcoholic. 
_do « ___ 
Lieut. Trowbridge... 
Dr. Geo. Suckley_ 
2. COTTOPSIS GULOSUS, Grd. 
Spec. Chau. —Origin of anterior dorsal fin situated opposite the insertion of the upper ray of pectorals. First ray of anal 
fin placed under the fourth of second dorsal. Extremities of pectorals extending beyond the origin of the anal. Skin 
generally smooth ; lateral line undergoing a sudden fall upon the peduncle of the tail. Reddish brown, spotted, and 
transversally barred with black ; beneath unicolor. 
Syn .—Collopsis gulosus, Grd. Proc. Acad. Nat. Sc. Philad. VII, 1854, 129. 
The most distinctive characteristic of this species consists in the general smoothness of the 
skin and the interruption of the lateral line upon the peduncle of the tail, features which lead 
to the genus Cottus proper, from which, however, this species differs by the presence of a well 
developed band of teeth upon the palatine bones. The general aspect of grown specimens is 
rather contracted, thickish and short; the head is especially thick, and constitutes the third of 
the length, the caudal fin excluded. The body is compressed, as deep as broad upon the 
insertion of the pectorals, and deeper than broad posteriorly. The upper surface of the head is 
flattened, the snout slightly declivous and rounded anteriorly. The mouth is broad, the jaws 
equal, and the lips conspicuously developed. The eye is rather small and circular, as usual 
near the upper surface of the head, and contained five times in the length of the sides of the 
head. The upper preopercular spine, the largest, is visible externally, conical, acute, and 
directed backwards and upwards, whilst two much smaller ones, situated upon the inferior limb 
of the same bone, are directed downwards and forwards. The branchiostegal rays are all well 
developed ; the widsth of the isthmus enters about three times in the distance between it and 
the extremity of tne lower jaw. 
The origin and relative position of the fins have nothing peculiarly different from C. asper. 
The extremity of the posterior rays of both the second dorsal and anal, however, extend nearly 
