138 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
These streams are not large, and their bottoms are too rocky to admit of very suc- 
cessful seining. The scarcity of fishes in these streams was very noticeable. The 
temperature of the Middle Fork was 76° Fah. ; of the South Fork, 74° Fah. Dr. 
John C. Brauner, geologist of Arkansas, informed the writer that large numbers of 
fishes were found dead along the Saline Forks the i) receding summer. It is thought 
that they had been killed by dynamite. 
1. Noturus nocturnus Jordan & Gilbert. 
Ouachita and the Saline ; only a few small specimens taken. 
2. Erimyzon sucetta (Lacdpbde). 
Caddo and Mazarn ; scales in lateral line, 44. 
3. Catostomus nigricans Le Sueur. 
Common in all streams. 
4. Moxostoma duquesnei (Le Sueur). 
Common in all streams, 
5. Campostoma anomalum (Eafinesque). 
Hot common ; taken in all streams. 
6. Chrosomus erythrogaster (Eafinesque). 
One specimen from the South Fork of the Ouachita. 
7. Hyboguathus nubila Forbes. 
West and Middle Forks, Saline Eiver, Hot Springs, Ark. 
8. Pimephales notatus (Eafinesque). 
The specimens of this species from the Ouachita Basin seem quite different from 
speeimens'taken elsewhere. The body is more slender and the top of the head is 
flatter. Head, 4| in the length of the body; depth, 5 ; scales in the lateral line, 44 to 
40 ; sides with a distinct lateral band, more prominent on snout. Common in all 
streams. 
9. Notropis boops Gilbert. 
The most abundant minnow in all streams, especially in the colder ones like the 
Caddo. 
10. Notropis whipplei (Girard). 
Abundant in all streams. 
11. Notropis megalops (Eafinesque). 
Hot common ; Caddo, Mazarn, and the Saline. 
12. Notropis umbratilis (Girard). 
Hot common ; taken in all streams. 
13. Notropis atherinoides caddonis Meek. 
One specimen from the Caddo; Ouachita, Mazarn, and Myers’ Creeks; scarce; 
head, 4J; depth, G; scales in lateral line, 39; 17 scales before dorsal flu; eye, 3^ in 
head ; snout, 3J ; dorsal inserted midway between pupil and base of caudal. Length 
of longest specimen, 2^ inches. 
14. Hybopsis dissimilis (Kirtland). 
Two specimens from the, Ouachita. 
15. Semotilus atromaculatus (Mitcbill). 
Two specimens from the Caddo. 
16. Fundulus catenatus (Storer). 
Taken in all streams ; common. 
