190 
BULLETIN or THE UNITED STATES FISH COMMISSION. 
This species was found only in Eoss Fork just above the Fort Hall Indian Agency. It 
does not seem to be very common, as a day's collecting in this stream resulted in taking 
only 18 specimens of the species. It apparently does not attain a length of more than 6 to 
8 inches. The Indian name Moo-gad-ee means sticker, or that which sucks. 
6. Catostomu.s macrocheilus Girard. 
Catostomus niacrocheilus Girard, Proc. Acad. Nat. Sci. Phila. 1856, 175. Type locality: Astoria, 
Oregon. 
Specimens obtained from Payette Kiver at Payette, 5; Boise River at Caldwell, 17; 
Clearwater Creek at Lewiston, 2; Hangman Creek at Tekoa, 6; Hangman Creek at Spo- 
kane, 1; Pataha River at Starhuck, 7; "Walla W'alla River at Wallula, 5; Colville River near 
Colville, 10; Umatilla River at Pendleton, 2; Snake River, at Payette, 2; Columbia River at 
Umatilla, 1; Skookmuchuck River near Centralia, 7; Post Creek, St. Ignatius Missioii, Mont., 
1; Pend d’Oreille River, Newport, Idaho, 19. 
This is the common sucker of the Columbia and Lower Snake rivers, and large numbers 
were frequently seen feeding in the shallow waters along shore. In 25 specimens the dorsal 
rays were as follows. Thirteen rays in 1 specimen, 11 in 15, 15 in 8, 16 in 1. Scales 67 to 70. 
The four siiecimens reported by Eigenmann from Idaho Falls are more likely referable to C. 
ardens; C. macrocheilus probably does not occur in the Upper Snake. 
7. Catostomus ardens .Jordan & Gilbert. 
Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880, 161. Type locality: Utah Lake, 
Provo, Utah. 
Six specimens from Mink Creek, near Pocatello, are identitied with this species. No adults 
of C. ardens were obtained, and the status of ardens and macrocheilus in the Columbia can not 
be determined until a larger series is available for comparison. In ail suckers of this tyj>e 
thus far taken from Snake River above the falls, inclndiug those from President Camp and 
from Heart L.ake, the dorsal fin is small, containing but 11, 12, or 13 rays; and the caudal 
peduncle is thicker than in specimens of macrocheilus of equal size. Measurements of our 
sxiecimens are given in the following table: 
Coll. No. 
He-ld. 
Deith. 
Eye. 
Snout. 
Dorsal. 
Anal. 
Scales. 
Length 
in inches. 
3 
20 
21 
22 
23 
^1 
6 
6 
2f 
9i 
“•i 
13 
13 
12 
13 
12 
12 
7 
7 
10-67-8 
10-67-8 
71 
70 
GC 
66 
10 
n 
8. Acroclieilus aliitaceus Agassiz & Pickering. “Chisel-mouth.” 
Acrocheilus alutaceus Agassiz & Pickering, Amer. .Jour. Sci. and Arts, 18.55, 99. Type localities: 
Falls of the Willamette and in Walla W.alla River. 
Specimens obtained from Payette River at Payette, 53; Pataha Creek at Starbuck, 1; 
Umatilla River at Pendleton, 15; Natchess River at North Yakima, 2; Walla Walla River at 
Wallula, Wash., 1; Columbia River at Umatilla, 26; Potlatch Creek, 2 miles above mouth, 
19; Snake River at Payette, 17 ; Boise River at Caldwell, 5. 
So far as known this species is confined to the Columbia River basin, where it is one of 
the most abundant and most widely distributed of the minnows. It has not yet been found 
in Snake Rivmr above the falls, nor is it known from the Pend d’Oreille basin. 
9. Rhiniclithys cataractae dulcis (Girard). Western Dace : Mot-to-nut-se of the Fort Hall Indians. 
Arejijreus dulcis Girard, Proc. Acad. Nat. Sci. Phila. 1856, 185. Tyjre locality: Sweetwater River, 
Nebraska. 
This widely distributed species is represented in the collection by the following: Mouth 
of Colville River, 1 ; Snake River at Idaho Falls, 2 ; Ross Fork near Pocatello, 64 ; Little Wood 
River near Shoshone, 9; CVenr d’Alene Lake, 14; Columbia River at Pasco, 3; Natchess River 
at North Yakima, 11; Post Creek, St. Ignatius Mission, Mont., 6; Clarke Fork at Thompson 
Falls, Montana, 2. 
/ 
