The Food of Fishes. 
67 
pear in Lepiopomus, Apomotis, etc., on the one hand, and 
Xenotis and Eupomotis on the other. If such peculiarities 
exist, they can probably be determined only by taking at 
one time and place a number of specimens of unlike char- 
acter in this particular. 
While I believe that the generalizations made above 
will hold good, at least for fishes of similar form and in- 
ternal structure among the Acanthopteri, I do not wish to 
be understood as extending them at present beyond this 
order. Doubtless, while the characters mentioned must 
assist greatly in determining the food of a species a 
priori, they are not by any means sufficient for this pur- 
pose when taken by themselves. The discussion of other 
features, external and internal, bearing upon this subject 
must be postponed to a later period of the investigation. 
Table of Food of Young Centrarchidje. (One inch and under.) 
Number of specimens 
I. Insects 
1. Diptera (larvae) 
Chironomus 
2. Hemiptera 
Corixa (young) 
3. Neuroptera{ larvae) 
II. Arachnida (Hydrachna), 
III. Crustacea 
Tetradecapoda 
Entomostraca 
Cladocera 
Ostracoda 
Copepoda . 
C/3 
3 
cu 
V) 
3 
u 
<u 
Cu 
O 
IOO 
07 
93 
87 
100 
IOO 
70 
06 . . 03 30 95 20 
98 
72 
IOO 
IOO 
88 
t 
22 
