REPORT UPON THE FISHES OF IOWA. 
225 
53. Etheostoma aspro (Cope and Jordan). Black-aided darter. Estherville, common; Dos Moiues, 
Lizard Creek, Fort Dodge, and Perry, rare; Beaver Creek, North River, Adel. 
54. Etheostoma phoxocephalum Nelson. Estherville and Perry, rare. 
55. Etheostoma zonale (Cope). Beaver Creek, Estherville, and Fort Dodge, common. 
56. Etheostoma flabellare Rafinesque. Fort Dodge, not common ; Beaver Creek, Estherville, and 
Perry, rare; Raccoon River. 
57. Etheostoma jessiae (Jordan and Brayton). Beaver Creek. 
58. Etheostoma iowae Jordan and Meek. Fort Dodge and Perry, rare. 
59. Perea flavescens (Mitchill). Yellow perch . Estherville and Perry, rare. 
III.— THE SKUNK RIVER. 
The Skunk River drains a narrow basin between the Iowa and Des Moines rivers. 
At Ames it is not large, has a sandy bottom, and flows with considerable current. 
Collections were made in the river and in a small bayou. Squaw Creek is smaller 
than Skuuk River, and in the summer the water is confined to a few holes. In Octo- 
ber, 1889, these holes contained many pickerel, bass, suckers, and buffalo-fishes. The 
following September I collected again in the same holes, but found very few fishes 
compared with the previous year. 
FISHES OF THE SKUNK RIVER. 
1. Ammocoetes branchialis (Linnseus). Mud lamprey. A larval specimen from this river is pre- 
served in the Iowa Agricultural College Museum. 
2. lotalurus punctatus (Rafinesque). Channel cat; White cat; Silver cat. Skunk River, common. 
3. Ameiurus nebulosus (Le Sueur). Common bullhead; Horned pout. Two specimens in the Iowa 
Agricultural College Museum have the anal rays 23. 
4. Ameiurus melas (Rafinesque). Bullhead. Skunk River, abundant in the bayou; Squaw Creek, 
abundant. 
5. Noturus exilis Nelson. Stone cat. Anal rays, 16. A few specimens are preserved in the Iowa 
Agricultural College Museum. 
6. Noturus gyrinus (Mitchill). Stone cat. Skunk River, rare, anal rays 13 or 14 ; Squaw Creek, rare. 
7. Ictiobus cyprinella (Cuv. and Val.). Bed-mouthed buffalo. Squaw Creek ; abundant in 1889, hut 
none taken the following year. 
8. Carpiodes velifer (Rafinesque). Quillbaek; Carp sucker. Skunk River and Squaw Creek, 
common. 
9. Catostomus teres (Mitchill). Common sucker. Squaw ('reek, abundant; Skunk River, common. 
10. Catostomus nigricans Le Sueur. Hog sucker; Stone roller; Hog mullet. Skunk River, common; 
Squaw Creek, rare. 
11. Minytrema melanops (Jordan). Striped sucker. Squaw Creek, rare. 
12. Moxostoma duquesnei (Le Sueur). Common redhorse; Mullet. Squaw Creek, abundant; Skunk 
River, not common. 
13. Moxostoma, sp. Squaw Creek, rare. Seales, 41; dorsal rays, 15 ; base of dorsal, 4£in body; head, 
4; depth, 3£; eye, 4&; caudal lobes equal ; body very deep ; back much arched. These speci- 
mens resemble the preceding, but the hack is much more arched and the body much deeper. 
14. Moxostoma aureolum (Le Sueur). Skunk River, rare; head very small 
15. Campostoma anomalum (Rafinesque). Stone-lugger; Stone-roller. Skunk River and Squaw 
Creek, common. 
16. Chrosom s erythrogaster Rafinesque. Bed-bellied minnow. Small brook, near Ames, Iowa, on 
the University campus; six specimens. 
17. Hybognathus nuchalis Agassiz. Silvery minnow. Squaw Creek, common: Skunk River, rare, 
F. C. B. 1890—15 
