FISHES OF THE COLORADO BASIN. 
485 
Fins moderate, the height of the dorsal li in head, the free edge somewhat concave; origin of 
dorsal fin behind ventrals, midway between base of middle caudal rays and nostril ; anal fin falcate, 
its anterior rays equal to longest dorsal ra5'S ; pectorals rather short, in head, not reaching ventrals ; 
ventrals short, barely reaching front of anal fin ; caudal (in widely forked. Color in alcohol, olivaceous 
above, with darker marbling and small dark spots scattered irregularly over back and sides, few of 
which are, however, found below lateral lino; under parts x>ale straw-color or silvery; fins all plain. 
The numerous specimens show but little variation from the above description, except in the squama- 
tion; the number of scales in the lateral line varies from 70 to 76. Occasionally there are 9 dorsal 
rays; eye, 4-| to .5; dej)th, ft to 44; head, 4 to 4^. From specimens of Agoda ijarroivi, from Gunnison, 
Colo., these differ in having larger scales (16-74 to 80-13 in yarroivi), deeper and more comjrressed caudal 
j)eduncle, and narrower head. 
This species was found to be quite abundant at Green Elver. It seemed to go in schools and 
to be found in the current, where they were feeding upon the gravelly bottom. At some hauls of the 
seine none at all would he taken, while at others considerable numbers would he secured. 
21. Ago.sia couesii (Yarrow). Types from near Camp Apache, Arizona, described as Apocope couesi 
by Yarrow in 1876, and recorded by Coi>e & Yarrow, 1876. 
22. Agosia chiysogaster Girard. 
iN’omilial species. 
Locality. 
Collector. 
AutLority, 
Agosia chrysogaster 
Agosia metallica 
Hy'borlij'iichus sideriiis 
V 
Rio Santa Cruz 
Rio San Pedro, tributary of Rio 
Gila, 
Camp Lowell, Arizona 
John H. Clark 
do 
Jas. M. Rutter 
Girard, 1850. 1859. 
Do. 
Cope & Yarrow, 1876. 
23. Couesius squamilentu,s Cope. Types from Henry Fork of Green River, Hayden collection, 
described as Ceratichihys sqiiamilcntus liy Coxie, 1871. ' 
24. Lepidomeda vittata Cojie. Tyi^es collected in the Colorado Chiquito by Dr. Newberry, described 
by Cope in 1874, and again recorded lay Cope & Yarrow, 1876. 
25. Lepidomeda jarrovii Cope. Types collected in the Colorado Chiquito by Yarrow & Hensh aw, 
and described by Cope in 1874, and recorded by Cope & Yarrow, 1876. 
26. Meda fulgida Girard. 
Xominal sx^ccies. 
Locality. 
Collector. 
Autlioritj’. 
Meda fulgida 
Bo 
Rio San Pedro, tributary of Rio 
Gila. 
John n. Clark 
Girard, 1856,1859. 
Cope, 1874. 
Cope &. Yarrow, 1876. 
Bo 
do 
27. Plagopterus argentissimus Coxie. Types from San Luis Valley in western Colorado, described 
by Coiie, 1874, and again reported by Co]je & Yarrow, 1876. 
28. Salmo mykiss pleuriticus (Co^je). 
Xomiual species. 
Locality. 
Collector. 
Authority. 
Salmo (Salar) virgiualis 
Bo . . 
Near Ft. Bridger, Wyo 
Hayden collection 
Cope, 1871. 
Bo. 
Co[>e, 1872. 
Coi)c & Yarrow, 1876. 
Bo. 
Bo j 
White River, Ariz 
H. W. Henshaw 7 
do 
Salmo mykiss pleuriticus 
Tagosa, Colo 
Trax>per Lake, Colorado 
C. B. Aiken 
Jordan, Evermann, Fesler 
Do. 
Jordan, 1889. 
Do 
Do 
Eagle River. Gyp-sum, Colorado. . . 
Canon Creek, Glenwood Springs, 
& Bavis. 
Evermann & Bavis 
Jordan, Evermann, Fesler 
Do. 
Do. 
Bo 
Colo. 
Sweetwater Lake, Eagle Co., Colo. 
& Bavis. 
Bo. 
Bo 
do. 
Bo. 
Bo 
Do. 
No trout were seen by us at Green River, but we were informed that they are occasionally taken 
there and that they are common further uj) the river in the small tributaries. 
