91 



Sub-family Centrakch[n.t;. (The Sun-fishes.) 



Genus 15. Micropierus, Lacepede. 



Black Bass. 



27. Micropterus dolomiei, Lac. — Small-mouthed Black Bass. 



(Bui. II, 44; Micropterus salmoides.) 



Abundant in rivers and larger creeks, but occurring more rarely 

 in lakes, preferring swifter waters than the preceding species. It 

 occurs throughout Illinois, but is relatively rare to the southward. 

 Has been taken by us in the Wabash and some of its larger tribu- 

 taries, but not elsewhere south of the Illinois Eiver. 



28. Micropterus salmoides, Lac. — Large-mouthed Black Bass ; Oswego 



Bass; Green Bass; Bayou Bass. 



(Bui. II, 44 ; Micropterus pallidus.) 



The large-mouthed black bass favors especially lakes, ponds and 

 sluggish waters, but occurs also in' rivers and large creeks through- 

 out Illinois. It is the common southern form of black bass, although 

 perhaps, on the whole, no more abundant there than in the north- 

 ern part of the State. 



Genus 16. Lepomis, Eaf. 



29. Lepomis gibhosus, L. — Common Sun-fish; Bream; Pumpkin-seed; 



Sunny. 



(Bui. II, 46 ; Eupomotis aureus.) 



By far the most abundant sun-fish in Northern Illinois, where it 

 literally swarms in every lake and pond. It occurs, however, 

 throughout the State, but somewhat rarely southward, its place 

 there being taken by Chcenohryttus gidosus. 



30. Lepomis notatus, Agassiz. 



(Bui. II, 46; Eupomotis jjallidus.) 



A rather rare species, occurring from the Illinois River southward, 

 chiefly in ponds and larger streams. 



31. Lepomis pallidus, Mitch. — Blue Sun-fish ; Copper-nosed Bream; 



Dollardee ; Eiver Sun-fish. 



(Bui. II, 45 ; Lepiopomus pallidus.) 



Probably the most abundant of the sun-fishes ; its preeminence, 

 however, in this respect being disputed by Lepomis cijanellus and 

 gibhosus. Its distribution and its haunts are more varied than those 

 of either of these species, as it is almost equally abundant in all 

 parts of the State, and occurs in all waters — in lakes, ponds, rivers. 



