116 
BULLETIN OP THE UNITED STATES FISH COMMISSION. 
sized. There seems to he iiothiug about these specimens that may not be taken as cliaracters 
of tlie young. Other .specimens i'rom the Columbia at Golden and at Eevelstoke show no dif- 
ferences from those from Calgary and Banff. A large head in the University’s collections from 
20 miles east of New AVestminster, B. C., has teeth on the shaft of the vomer and is S, 
namai/cush ( Walhaum). 
€6. Percopsis guttatus Agassiz. Winnipeg, Brandon, Eegina, Swift Current, Medicine Hat. This 
species is abundant in almost all streams from AVinnipeg to Medicine Hat. Tliey are more 
numerous and larger in the cool, clear streams. The genera of Pcrcopnida’ may he distin- 
gtiished as follows ; (Plated.) 
a. Doi’sal, with two fsehle, slender, nnhranched rays; anal, with a single similar ray; scales most 
strongly ctenoid on caudal peduncle ; posterior margin of preo])ercle entire or with feeble 
crenulatious ; form slender Pekcopsis. 
aa. Dorsal and anal each with two very strong spines; scales most strongly ctenoid on anterior 
]iart of body; posterior margin of preojiercle with a few short but strong spines; form heavy, 
deep Columbia. 
47 . Columbia transmontana Eigenmanu & Eigenmann. Umatilla. (Plated.) 
Coltnnhia transmuiitaiia Eigenmanu & Eigenmann, Science, 1892, 233 (Umatilla, Oregon). 
Head, 3|-3A (3 in the young) ; depth, 3^-3|- (4 in the young) ; D. ii, 94; A. ii, d4; scales, 7 to 
9-44 to 4d-7. Body comparatively deep, dorsal profile more arched than the ventral, making 
an angle at the origin of the dorsal liu; sides compressed, caudal peduncle most so. Heael 
short and chubby, eye equal to snout, about 3J in the head. First dorsal spine about equal 
to the pupil, second spine one-half length of head, recurved and very deeply grooved behind. 
Anal spines somewhat lower than the dorsal s])iues; veutrals reaching past vent. Nape, with 
the excej)tiou of occipital spine, scaled. Translucent in life. Color, generally smutty. Side 
with three rows of more or less oblong blackish spots, the middle and superior rows most 
noticeable. Back with a series of similar spots, one being more conspicuous at beginning and 
end of first dorsal. Doisal mottled, caudal barred. Head smutty, a blue black spot on middle 
of 02>ercle; a narrow, silvery, lateral band. Young translucent, with well-defined dark sjiots. 
48. Lucius lucius Linmeus. AA^inuijieg, Brandon, AAYstbourne, Moose .Jaw, Swift Current, Medicine 
Hat. This sjiecies is common throughout the North and is one of the most jiromineut game 
fishes. Usually called pike, the name pickerel being applied to the two siiecies of Stizostedion. 
49 . Pygosteus pungitius Liniueus. This sjiecies was obtained in the clear waters of the Qu’Atqielle 
Eiver. It was not noticed elsewhere. 
50 . Eucalia incoiistans Kirtlaud. Qu'Aiipelle, Eegina, Swift Current, Alajile Creek, Calgary, Poplar. 
This siiecies is very abundant at Eegina just below the dam. 
51 . Etheo&toma giintheri Eigenmanu & Eigenmann. 
Ptheostoma giiniheyiFAgeumann & Eigenmann, Am. Nat. 962, 1892. AAMimii)eg; Cedar Eapids, Iowa 
Tyjies: Three s^jecimens 50, 50, and 60 mm. long, AA’inni^ieg, Manitoba. 
Three siiecimens from near Cedar Eapids, Iowa, collected by Seth E. Meek. 
Premaxillaries not ju'otraetile; gill-membranes scarcely connected; ventral line with the 
median scales enlarged ; lateral line complete; palate with well-develoiied teeth ; dorsal sjiines, 
10; 2ireo2>ercle entire ; naiie and breast, exeej)! the median line, naked; cheeks and opercles 
each with about three series of large ctenoid scales. This siiecies is very closely related to 
JE. aspro, from which it differs in the uniform size of the scales ou the cheeks and on the 
opercles, etc. Head, 3*; depth, 6^; D. x-13 or 14; A. ii, 94-114; scales, 5-52 to 54-5. Form 
of E. aspro] mouth moderate, the maxillary not extending beyond anterior margin of eye, 
about 3 in head; eye, 3|- in head; cheeks with about 25 large, strongly ctenoid scales; opercle 
with similar scales; gill-membranes much more connected than in E. aspro, the connection 
not extending back beyond middle of cheeks. Outer series of teeth considerably enlarged in 
each jaw. Dorsal spines slencjer and high, slightly more than snout aud eye in length; soft 
dorsal shorter and lower than the spinous. First anal spine but little longer than second; 
pectoral equals head less opercular spiue; ventrals but little shorter than pectorals. Breast 
naked, a few scales along its median line, mid-ventral line naked, the scales when present 
probably little if any larger than those of the sides; nape naked, as in E. aspro. 
Translucent in life; a dark stripe down and another down and forward from eyes. A 
black spot ou humeral region. Sides with about eight dark spots, which are narrow, on ante- 
rior part of body, further apart aud larger ou tail; only the last three extending above the 
