192 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
We include lauder tins name the Ar/osia of the Great Salt Lake basin (exclusive of the 
Sevier Fiver) and of the Upper Snake River. Onr collection contains specimens from Port Neuf 
River, Mink Creek, and Ross Fork near Pocatello, and from Little Wood River at Shoshone. 
It differs from niihila in its finer scales (average about 65) and in the absence of tlie sharply 
marked blackish scales on the sides. The Fort Hall Indians, to whom we showed specimens 
of this minnow, called it Mo-sha-pog-gee, a word which they say describes its eating habits. 
12. Agosia Umatilla sp. nov. (PL 21.) 
Tyjje locality: Columbia River at PTmatilla, Oregon, where 15 siiecimeus were collected. 
August 11, 1893, by Messrs. Gilbert and Ratter. Type, No. 45390, U. S. Nat. Mus. Co-tyxres, No. 
45391, LI. S. Nat. Mas., and Nos. 1142 to 1147 (Umatilla) and 1148 to 1150 (Payette) Museum 
Lelaud Stanford Junior University. 
Associate type locality : Payette River at Payette, Idaho, where 3 specimens were secured; 
August 9, 1893, by Messrs. Gilbert, Thoburn, and Rutter. 
Related to Agosia falcata and Agosia nubila carringtonii. 
Description: Head, 3‘^; deirth, 4|; eye, 4; snout, 3. D. i, 9; A.i, 7; scales, 14-68-8, about 
30 before the dorsal. Teeth, 1, 4-4, 1 hooked. The body is rather slender, the back somewhat 
elevated; head pointed, narrow; month inferior, nearly horizontal, narrow; caudal peduncle 
compressed, slender, its least depth 2 in head. Origin of dorsal flu slightly behind insertion 
ofventrals and about midway between base of middle caudal rays and nostril; dorsal fin 
falcate, the anterior rays nearly as long as head, their tips reaching well beliind posterior 
rays when deilexed ; rudimentary ray not enlarged nor siiinelike ; anal strongly falcate, the 
anterior rays much produced, about as long as head and more than twice the length of the 
posterior rays; pectoral not quite reaching ventrals, II in head; ventrals reaching well 
beyond front of anal, in head; caudal deeply forked; no ventral stays. Barbel minute; 
upper lip without frenum. Color in alcohol, olivaceous above, covered with obscure patches 
of darker; sides with a distinct irlnmbeous baud following the course of the lateral line and 
extending forward through the eye and around snout; side with a number of dark blotches, 
usually imperfectly defined, partly covering the plumbeous band ; a large dark blotch on base 
of caudal peduncle, and one or two smaller ones on base of caudal rays. Length, 65 mm. 
The range of variation, as shown by the co-types, is not great. Dejith, 4f to 5 ; eye, 34 to 
4; scales, 13 or 14, 60 to 70-7 or 8; D. 8 or 9. There are slight but unimportant color differ- 
ences. (For variation in measurements, see table.) 
This species is somewhat intermediate between Agosia falcata and A. nubila carringtonii. 
From the former it may bo distinguished by its notably smaller scales, absence of ventral stays, 
and smaller eye; from the latter it differs in its longer, more slender snout and larger, strongly 
falcate fins. As in A. falcata, the top of head and anterior portion of trunk are often covered 
with minute nuptial tubercles. From Agosia adobe it differs in the larger eye, which is con- 
tained 14 to 1^ times in snout, while in A. adobe it is contained 2 to 2-J times; the fins are 
higher and more falcate, and the scales below lateral line are larger. The 3 specimens obtained 
from Payette River do not differ materially from those found at Umatilla. 
13 . Agosia falcata Eigeumann & Eigenmaun. 
Agosia falcata Eigenmaun &, Eigeumann, American Naturalist for February, 1893, 153. Ty^ie 
locality: Boise River, Caldwell, Idaho. 
This interesting species was obtained by ns at the following places: Boise River at 
Caldwell, 97 ; Payette River at Payette, 27 ; Snake River at Payette, 1 ; Mill Creek near 
Walla Walla, 1 ; Columbia River at Umatilla, 55; Columbia River at Pasco, 5. 
In the following table we give measurements of a number of specimens: 
Boise Kiver at Caldwell. 
Head 
4 
4 
3;1 
3J 
4 
4 
3§ 
3| 
31 
3;1 
3-s 
3J 
31 
4 
4 
3? 
Dejjtli 
■Is 
•Is 
5 
5i 
5 
5 
41 
5 ' 
4 
34 
4J 
5 
5 
41 
5 
5 
Bye 
3i 
4 
34 
34 
3J 
3=1 
34 
31 
4 
34 
34 
34 
34 
3.1 
31 
Snout 
05 
OS 
2®- 
3 
3 
24 
25 
3 
3 
21 
03 
“4 
3 
3 
3 
3 
3 
3 
9 
9 
9 
9 
10 
9 
9 
9 
9 
9 
9 
7 
7 
7 
7 
7 
7 
7 
56 
53 
53 
55 
54 
56 • 
55 
59 
1 
i' 
1 
Payette Kiver at Payette. 
