30 
The Food of Fishes. 
Details of the Food of the Etheostomathle. 
Pleurolepis. 
Alvordius. 
Boleosoma. 
Pcecilichthys. 
03 
.£ 
u 
K 
PL. 
Nanostoma. 
Etheostoma. 
Boleichthys. 
Microperca. 
Number of specimens 
7 
12 
12 
8 
II 
OI 
01 
65 
43 
02 
4 i 
05 
05 
03 
02 
2 
6 
3 
9 
I. Mollusca 
Ancylus rivularis Say 
II. Insecta 
100 
93 
12 
81 
99 
07 
01 
06 
13 
13 
96 
73 
07 
66 
100 
58 
09 
49 
100 
100 
35 
65 
88 
61 
61 
100 
37 
10 
27 
36 
34 
34 
I . Dip ter a 
Undetermined larvae. 
Chironomus larvae . . 
2. Hemiptera 
Corixa 
Undetermined 
Larvae 
07 
06 
79 
3 
63 
04 
04 
C. tumida Uhl 
3. Neuroptera 
07 
07 
23 
08 
08 
42 
32 
14 
18 
17 
0< * 
27 
27 
63 
63 
02 
02 
Ephemeridae 
Pupae 
Larvae 
07 
09 
.... 
27 
63 
02 
Palingenia 
Agrionidae (pupae) . . 
Phryganeidae (larvae) 
III. Crustacea. . . 
15 
04 
10 
08 
33 
03 
01 
12 
.... 
64 
12 
06 
06 
1. Amphipoda 
Gammarus, yg 
Crangonyx n 
Allorchestes dentata Sm. 
03 
24 
06 
07 
05 
05 
01 
2. C ) 'adorer a 
27 
Undetermined 
Daphniidae 
Daphnia 
Sididae 
Daphnella 
Lynceidae 
03 
24 
Chydorus . 
Eurycercus 
01 
OI 
?I 
61 
3. Ostracoda 
Cyprididae 
06 
06 
Undetermined 
Cypris 
4. CoPePoda 
01 
01 
44 
ot 
05 
05 
O! 
12 
12 
19 
19 
Cyclops 
Coniervoid Alcae 
in these notes was bought in the Chicago market. They 
were evidently of the river form of the species, and judg- 
ing from the contents of their stomachs, which included 
a crustacean* not known to occur in Illinois hut found 
abundantly in Michigan, I conclude that they were from 
that state or from Wisconsin. 
* Mancasellus tenax , Harger. 
