222 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
38. Lucius lucius (Linnaeus). Pike; Northern pickerel. Very common, especially in the large grassy 
bayous. 
39. Lucius masquinongy (Mitchill). Muskellunge. Rare. 
40. Anguilla chrysypa Rafinesque. Eel. Rare ; no specimens were observed by the writer. 
41. Labidesthes sicculus Cope. Brook silverside. Common at mouth of Mad Creek ; rare at Daven- 
port. 
42. Pomoxis sparoides (Laedp&de). Calico bass; Grass bass ; Strawberry bass. Abundant, especially 
in grassy bayous. 
43. Pomoxis annularis Rafinesque. Crappie; Bachelor. Common ; found with the preceding, but in 
less numbers ; not common at Davenport. 
44. Ambloplites rupestris (Rafinesque). Bock bass ; Red-eye; Goggle-eye. Very common. 
45. Chasnobryttus gulosus (Cuv. and Yal.). War-mouth; Bed-eyed bream. Very common, especially 
in the bayous ; common at Davenport. 
46. Lepomis cyanellus (Rafinesque). Grreen sunfisli. Very abundant at Muscatine; common at 
Davenport. 
47. Lepomis humilis (Girard). Bed-spotted sunfish. Common at Davenport. 
48. Lepomis pallidus (Mitchill). Blue sunfish. Abundant; common at Davenport. 
49. Lepomis megalotis (Rafinesque). Long -eared sunfish. Common. 
50. Lepomis gibbosus (Linnaeus). Common sunfish. Very common. 
51. Micropterus dolomieu LacApede. Small-mouthed black bass. Abundant at Muscatine ; not com- 
mon at Davenport. 
52. Micropterus salmoides (LacApede). Large-mouthed black bass. Abundant; small specimens 
found in bayous on the Illinois side of the river at Muscatine; not common at Davenport. 
53. Etheostoma pellucidum clarum (Jordan and Meek). Sand darter. Rare at Davenport. 
54. Etheostoma shumardi (Girard). A few specimens taken from the river. 
55. Etheostoma phoxocephalum Nelson. Rare. 
56. Perea flavescens (Mitchill). Yellow perch. Very common. 
57. Stizostedion vitreum (Mitchill). Wall eyed pike; Jack salmon. Very common. 
58. Stizostedion canadense (C. H. Smith). Sanger; Sand pike. Less common than the preceding. 
59. Roccus chrysops Rafinesque. White bass. Common at both Muscatine and Davenport. 
60. Morone interrupta Gill. Yelloiv bass. Not common. 
61. Aplodinotus grunniens Rafinesque. Fresh-ioater drum; White perch. Common at Muscatine 
and Davenport. 
62. Lota lota maculosa (Le Sueur). Burbot; Lake lawyer. Not common. 
II.— THE DES MOINES RIVER AND ITS TRIBUTARIES. 
This is the largest river basin within the State, occupying a large part of its cen- 
tral area. The main river was visited at Estherville, Fort Dodge, and Des Moines. 
At Estherville it is little more than a small creek, with sandy or gravelly bottom and 
much vegetation. At Fort Dodge the river is large, but its physical characteristics 
are about the same as at Estherville. At Des Moines the bottom is sandy, with con- 
siderable mud and but few rocks. 
Lizard Creek, near Fort Dodge, is a small stream with very rocky bottom. Its 
current is not swift and it becomes nearly dry during the summer. The Eaccoon 
Biver is a large western tributary of the Des Moines. At Perry it has a sandy bot- 
tom with little mud and rocks, while at Des Moines its characteristics are about the 
same, but it is larger. Beaver and W alnut creeks, near Des Moines, are small streams, 
with muddy and sandy bottoms, which become nearly dry during the summer. The 
other streams near Des Moines mentioned in this paper were not visited by the writer. 
The specimens examined from them were collected by Prof. Call, of Des Moines, and 
are mostly in the Des Moines High School. In the following list all citations of the 
Eaccoon Biver refer only to that river at Des Moines. 
