72 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
10. Ptychocheilus oregonensis (Richardson). Squawfish; Yellowlelly. 
This large minnow is abundant throughout the Columbia River basin except the portion above 
Shoshone Falls. In Montana, and perhaps elsewhere, it is called “squawfish”; at Sawtooth, Idaho, it 
is known only as “yellow belly”; at Mapleton, Oregon, “chub” was the only name heard applied to 
it; while at Tsiltcoos Lake it was called “ dace.” Specimens obtained from Lakes Alturas, Pend 
d’Oreille, Gamlin, Washington, Tsiltcoos, Whoahink, and Tahkenitch, and from Siuslaw River. One 
was taken on a set line in Whoahink Lake, at a depth of 78 feet, on December 3. 
Scale and fin formulas and comparative measurements of specimens of P. oregonensis from Lalce Washington . 
Length 
in 
inches. 
Head. 
Depth. 
Eye. 
Snout. 
Dor- 
sal. 
Anal. 
Scales. 
Length 
in 
1 inches. 
Head. 
Depth. 
Eye. 
Snout. 
Dor- 
sal. 
Anal. 
Scales. 
7. 25.. 
3. 64 
5.33 
5.60 
1.80 
10 
9 
76 
5. 25 
3 7g 
5. 00 
5. 00 
1.42 
10 
9 
77 
7. 75.. 
3. 67 
5. 00 
5. 80 
2. 00. 
10 
9 
80 | 
5! obi" 
3. 60 
4. 86 
5. 25 
1. 67 
10 
9 
74 
7. 00.. 
3.50 
5.00 
5. 60 
1. 80 
10 
9 
77 
4.63... 
3.83 
4. 75 
5. 00 
1.67 
10 
9 
76 
5. 75.. 
3.57 
5. 00 
5.17 
1.67 
10 
9 
74 
4.38..: 
3.83 
. 4.67 
4. 67 
1. 50 
10 
9 
74 
5. 88 . . 
3. 44 
5. 00 
5. 00 
1. 50 
10 
9 
74 
4. 38... 
3.67 
4. 67 
5.00 
1. 50 
10 
9 
77 
5. 50.. 
3.67 
5. 00 
5. 00 
1.50 
10 
9 
75 
3. 17... 
3. 60 
4. 60 
4. 60 
1.40 
10 
9 
78 
11. Leuciscus bicolor (Girard). 
Judging from our collections, this is the most abundant minnow in Upper Klamath Lake. About 
60 were obtained at the lower end of the lake November 10, and over 100 from a small creek at Pelican 
Bay November 5. At the time of collecting this species was found in the shallow water of the little 
creeks and passages among the tules. The largest are 9 to 10 inches long, but only a few exceed 3 
inches. Examples 2 to 3 inches long gave the following measurements : Head 4; depthS; eye 3^ to 
3|; snout 4f to 44; scales 59; teeth 2, 5-5, 2.' See illustration on page 7 of this Bulletin. 
12. Leuciscus siuslawi, new species. 
Type No. 48480, U. S. N. M., a specimen 5 inches long. Cotypes No. 433 U. S. F. C. ; No. 48231, 
U. S. N. M., and No. 5702, L. S. Jr., Univ. Mus. Type locality: Siuslaw River at Mapleton, Oregon. 
Collected September 8, 1896, by S. E. Meek. 
Head 41; depth 4^; eye 4; snout 3J; maxillary 3f- ; D. ii, 9; A. ii, 12 or 13; scales 11-58-8; teeth 
2, 4-5, 2, somewhat hooked. 
Body rather slender, slightly elevated and somewhat compressed; head small and pointed, cheek 
not deep; snout pointed, somewhat longer than eye; mouth moderate, somewhat oblique, maxillary 
just reaching vertical at front of orbit; jaws subequal, the lower sometimes slightly projecting; eye 
large, not as great as snout. Origin of dorsal fin behind base of ventrals and much nearer base of 
caudal than tip of snout, the longest ray 14 in head, greater than base of fin; origin of anal fin under 
Fig. 4 .—Leuciscus siuslawi Evermann & Meek, new species. 
