Occasional Papers of the Museum of Zoology 1 1 



20. Esox vermiculatus Valenciennes, Little Pickerel. — Many 

 were present in the river, and a few were found in Sycamore Creek 

 near its mouth (Station 26). They rest, apparently in ambush 

 for prey, commonly under bushes or other shore vegetation over- 

 hanging the water. 



21. Aphredoderus sayanus (Gilliams), Pirate Perch. — One 

 taken at Station 7, the junction of the two branches of the Galien 

 River, from the muddy bottom area with pondweed patches 

 (Plate I, Fig. 2). 



22. Pomoxis sparoides (Lacepede), Calico Bass. — One taken 

 from among floating brush in about four feet of turbid water at 

 Station 50. 



23. Ambloplites rupestris (Rafinesque),Rock Bass. — A few taken 

 in each of five different stations, and these fish were all very small, 

 under two inches in length, except one rather large example eight 

 and a half inches long, which was caught at Station 12 by drawing 

 the net through a thick pondweed tuft in rapid, clear water. 



24. Eiipomotis gibhosus (Linnaeus), Common Sunfish. — Three 

 caught along the shore of the river at Station 5. 



25. Micropterus salmoides (Lacepede), Large-mouthed Black 

 Bass. — Three small ones, three to three and a half inches long, 

 taken at three different stations, 7, 10, and 12. All were dissected 

 to determine the nature of the food, and each fish was found to have 

 been feeding extensively on small water bugs, Corixidae. This 

 appeared to be the only food in two of the fish, while one had 

 remains of three small amphipod crustaceans in addition to many 

 corixids in its alimentary canal. 



26. Percina caprodes (Rafinesque), Log Perch. ^Dne taken from 

 under a log on gravel bottom of shallow water at Station 30. 



27. Hadropterus aspro (Cope and Jordan), Black-sided Darter. 

 — A few taken at each of four stations, 5, 7, 12, and 30, but common 

 only at Station 12, where the bottom was sandy and the water 

 comparatively rapid and clear. 



