INSECTS 4. 
LEPIDOPTERA 2 (Caterpillars). 
COLEOPTERA 3, — Carabidae 1 (Agonoderus pallipes), Gyrinidae 1 (larva), 
Scarabaeidae 1 ( Aphodius inquinatus) , Chrysomelidae 2 (Diabrotica 12 — 
guttata and a Haltica ?). 
DIP TER A 2 (larvae of gnats). 
ORTHOPTERA 1 (Phaneroptera curvicauda, a Tettix and a cricket.) 
HEMIPTERA 3 (Corixa alternata 2, Arma ? 1). 
NEXJROPTERA 2 (Larvae of Ephemeridae.) 
ARACHNID A 3. 
Spiders 2, Hydrachnidae (water mites) 1. 
MOLLUSKS, 2. 
Gasteropoda 2 (Physa, Planorbisj. 
- Also an earthworm, some Potamogeton, and a number of unrecognized small 
seeds. 
19. Blue-cheeked Sun-fisli. Lepiopomus ischyrus, Nels. (1). Full of 
hornwort (Ceratophyllum demersuni) and a polyzoan (Plumatella ?) ; also 
fragments of small bivalve shells, some small Crustacea ( Asellus, * Allorches- 
tes dentata, Sm., and Cypris, sp.) and a little mixed vegetable matter. 
20. Bream. Pumpkin Seed . Eupomotis aureus, Walb. (1). Sev- 
eral Aselli, univalve mollusks, and some unrecognized vegetable matter. 
PIRATE PERCHES. APHODODERIDAE. 
21. Western Pirate Perch, j* Aphododerus isolepis, Nels. (3). The 
largest specimen (3 in. long) had eaten several Aselli, some larvae of dip- 
tera, a Corixa and another water-bug — apparently a Galgulus. The sec- 
ond in size (2i in.) contained only a small cycloid fish and several larvae of 
neuroptera. In the stomach of the smallest were several ostracoda (Cypris,) 
a larval Corixa and a few gnats. 
MAIGRES. SCIAENIDAE. 
22. Sheepshead. Haploidonotus grunniens, Raf. (7). Mollusks and 
larvae of May flies, with a few larvae of gnats. 
Unios 2, Planorbis 2, Limnea 1, Ephemeridae 6, diptera 2. 
* See appendix. 
fAn observation of the intestines shows that one effect of the remarkable 
change in the position of the vent in this species is the lengthening of the alimen- 
tary canal and a consequent increase of the digestive surface. The intestine passes 
from its origin at the stomach first upward, then backward, then downward, reach- 
ing the ventral wall at a point about half way from the bases to the tips of the ven- 
trals. In the smallest specimens, it opens at this point. In the others, it turns 
forward along the middle line of the belly, and opens at a point more or less to the 
front, according to the size of the fish, leaving a seam of naked skin behind. 
