204 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
^’olne^ with a very narrow baud of teeth; palatines naked; skin wholly naked, lateral 
lino complete. Dorsal fins not joined unless at extreme l>ase ; fins all low, the pectorals barely 
reaching front of anal ; I'rout of anal under tliird ray of second dorsal, its last ray under 
fourth from last ray of latter. Free portion of caudal peduncle (behind last anal ray) 
contained If in head; iiortion Irehiml baseof lastdorsal ray3 in head; neither dorsal nor anal 
reaching base of caudal when depressed. 
Color in alcohol; head on sides rather finely vermicnlated rvith light and dark; plain 
whitish below; not coarsely spotted or Idotehed as in pliilonipf:; dorsal bars indistinct; two 
narrow Idack lines downward and backward from the eye ; an evenly convex dark bar at base 
of caudal; dorsals, pectorals, and caudal faintly crossbarred. 
Length 81 mm. 
I'he second specimen, which is 71 mm. long, agrees closely in every respect with the type. 
This species is very closely related to CoUus iihilotiips, from wliich it differs only in the 
total absence of any preopercnlar spine. In both specimens, and on each side, the preoper- 
crdar margin is entirely rounded throughout, without any prominence and without the least 
trace of a spine. It seems very improbable that the two should agree in lieiug merely abuor- 
mal in this respect, and we are forced to couclnde that a form exists which is peculiar to the 
Malade Liver, a stream otherwise remarkable in its ichthyologic features. 
36. Cottus philonips Eigeumann. 
This name was proposeil as a substitute for Cottus 7niniitus Fallas, supposed to be pre- 
occupied, and Cottus microslomiis (Lockington), not of Hieckel. The first meutioned is 
perfectly available, but was ai)plied to a specimen from the islamhof Talek, near Tauisk, in 
tlio Okhotsk Sea. It is very doubtful, therefore, whether C. ininu.tus should be used for any 
American species in advance of comparison with the Siberian^ form. From the Aleutian 
Island species (C. microslomiis Lockington), C. p/u7o/up« differs in many important respects, 
and is undoubtedly distinct. Thus the Alaskan form has the j>osterior nostrils in short hut 
conspicuous tubes, the preorbital ju’oduced into a lobe which conceals all of the maxillary 
except tlie extreme tip, and the dorsal fin with 8 or 9 spines and 18 to 20 soft rays. 
Cottus 2>^<f^oiiipis is a small-headed form, typically with perfectly smooth skiu and 
unarmed ]talatiues. Like most other species of the genus it occasionally develops a baud of 
postaxillary prickles, which are often accompanied in the same specimens by a small 
patch of teeth on the palatine bones. The head is less strongly armed than usual, the single 
preopercnlar spine being short, the preopercnlar margin otherwise wholly unarmed. In this 
respect C. j)hilonq}S differs from all other western species of Cottus, except the Alaskan form 
above mentioned. ' 
The dorsal varies from vu or viii, 16 to 18; the anal from 12 to 14. The nostrils are 
without tubes, and rhe preorl)ital little produced, exposing the greater part of maxillary in 
closed mouth. 
Specimens were ol)taine<l in the Port Nenf Liver near Pocatello, at Snoqnalmie Falls, 
and in a spring branch emptying into tne South Fork of the Cfciir d’Alene River, near Ward- 
ner. Idaho. We have also seen specimens taken from Birch Creek, in western Idaho, by 
Merriam and Bailey. 
37. Cottus marginatus Bean. 
Six small specimens from Mill Creek at Walla Walla (the type locality of marginatus) 
agree with Bean’s description and differ from all other western sx>ecimeus of Cottus wdiich we 
have seen in having but three soft rays in the ventral fins. So far as can be ascertained from 
our very immature specimens, ?nrtr^i/nL«s strongly resembles perplexus, with which it agrees 
in fin rays, naked skin, the iuconpilete lateral line, and the absence of palatine teeth. C. 
perplexus has constantly 4 soft rays in the ventral fins, and other differences may appear when 
compared with adult specimens. In our specimens of •margiuahis, the anus varies in position, 
being sometimes nearer base of caudal fin than snout, sometimes nearer snout. Twenty-two 
small specimens, collected by Beau and Woolman at Sand Point, Idaho, are for the present 
referred to this sytecies, though we are not certain that this identification is correct. The- 
ventrals seem to be i, 3, Imt the body is more or less covered with prickles. 
