(75) 



5. Rough-cheeked Darter. Poecilichthys asprigenis, Forbes, (2.) 

 Larvae of Chironymus (diptera), and other aquatic larvae : also pupae of a 

 small Ephemerid approaching Baetisca. 



6. Striped Darter. Etheostoma lineolata, Ag. (1.) Many larvae of 

 Chironymous (diptera). 



7. Boleichthys elegans, Gir. (1.) Larvae of 



gnats and of May-flies, with a few copepoda. 



PERCHES. PERCIDAE. (7.) 



Chiefly fishes, including perch, bass, sun-fish, gizzard shad, minnows, 

 (Cyprinidae) and cat-fish; also water-bugs (Corixa). 



8. Ringed Perch. Perca americana, Schrank, (1). A cyprinoid fish. 



9. Black " Salmon." Wall-eyed Pike. Stizostethium vitreum, Mitch. 

 (1). A bony fish with sub-globular stomach ; probably one of the suckers. 



10. White "Salmon." Wall-eyed Pike. Stizostethium canadense, 

 Smith, (4). A common perch (Perca), a sun-fish (ichthelidae), a black 

 bass (Micropterus salmoides), a gizzard shad (Dorosoma), a cat-fish (Silu- 

 ridae), and an undetermined bony fish with cycloid scales. 



11. Wall-eyed Pike. Stizostethium, (species undetermined) (1). An 

 unrecognizable bony fish and several water-bugs (Corixa alternata. Say). 



WHITE BASS. LABRACIDAE. [i.) 



Sun-fish, larvae of neuroptera and diptera, and other insects. 



12. White Bass. Roccus chrysops, Raf. (3). Chiefly larvae of May- 

 flies (Ephemeridae) ; also a sun-fish, (Centrarchidae) and another spiny- 

 finned fish, and a few larvae of Chironymous and other diptera. 



13. Yellow Bass. Morone interrupta. Gill. (1). Chiefly larvae of 

 Ephemeridae (May-flies). An amphipod crustacean ( AUorchestes dentata, 

 Sm.), some larvae of dragon flies (Agrion) and a few young grasshoppers. 



BLACK BASS AND SUN FISHES. CENTRARCHIDAE. {31.) 



Food mixed, animal and vegetable, the former largely predominating. 

 A few fishes ( a darter, another percoid fish, and two or three cyprinoid 

 minnows), a multitude of insects, land and water, representing all orders but 

 hymenoptera; arachnida (spiders and water mites;, amphipod and isopod 

 Crustacea (Allorchestes and Asellus), hosts of entomostraca (cladocera 

 and copepoda, chiefly the former), a few moUusks, bivalve and univalve, an 

 earth worm, and masses of Plumatella-like polyzoa ; also a good deal of 

 Potamogeton, Ceratophyllum and other water weeds, and algae, together 

 with miscellaneous floating vegetable trash. 



