(37) 



great abundance throughout the state, as far as I can learn. The young 

 are found in myriads in the ditches draining the marshes along the Calumet 

 river. 



23. M. salmoides, (Lac.) Gill. Small-mouthed Black Bass. Like the 

 preceding, found in all parts of the state, and in nearly equal numbers. 



Genus Centrarclms, Cur. 



24. C. tndeus, (Bosc.) C. & V. Shining Bass. A single specimen, 

 about three inches in length, is in the collection from a small stream flowing 

 into the Mississippi, near Fountain Bluff, Southern Illinois. 



Genus Pomuxi/s, Raf. 



25. P. hexacant/ins, ( C. & K") A(f. Calico Bass. Very abundant in 

 the streams and small lakes in Northern Illinois, where it almost, if not 

 entirely, replaces the following. Much less numerous farther south. 



26. P. annu/an's, Raf. Croppie. Very abundant in all the streams 

 through Central and Southern Illinois. 



Genus Amhloplites, Raf. 



27. A. rupestrisj (Raf.) Gill. Rock Bass. Very abundant every- 

 where collections have been made. 



Genus ChaenohryttuSf Gill. (^zzzGlossopolites, Jord.^ 



28. C. gnlosus, (C. & V.') Cope. (z^G. melanopsy (^Gir.) Jard.) Black 

 Sun Fish. Prof. Forbes has found this species very common in the Illinois 

 and tributarieSjthrough Central Illinois. Specimens have also been taken 

 in Lake Michigan by Prof. Jordan. 



Genus lelipomis, Raf. {■=^Chaenohryttus^ Grd.^ 



29. T. cyanellus, Raf. Blue Sun Fish. Very abundant throughout the 

 state in both large and small streams. 



30. T. microps, (Grd.) Nelson. Common in the Calumet river in north- 

 eastern, and tributaries of the Illinois in central and western parts of 

 the state. 



31. T. nephelu^i, [Cope) Nelson. Occurs rather uncommonly in the Wa- 

 bash valley: very hardy and voracious. (Jordan.') 



Genus Ichthelis, Raf, 



32. /. incisor, ( C. & F.) Holhr. Blue Sun Fish. Abundant in all 

 waters throughout the state. 



33. 1. speciosus, ( Grd^ ) Jord. Rather common in the western part of 

 the state in tributaries of the Illinois and Mississippi. Also a few speci- 

 mens are in the collection of the author from the Calumet river. Although 

 this species approaches closely to incisor, yet certain tangible distinctions, 

 sufficient to distinguish the two at sight, are always present as far as my 

 observations have extended. 



34. /. aqniliensis, i Grd.) Nelson. A fine adult specimen is in the state 

 collection from the Illinois, and a second less mature from the Fox river at 

 Geneva is in my collection. 



