65 



Genus 18. Ambloplites, Raf. 



40. Amblo2^lites rupestris, R-a,(. — Common Rock-bass; Rkd-eye; Goggle-eye. 



Quite common northward, but relatively rare in Southern Illinois, where, 

 indeed, we have not yet taken it. As its southern ranpfe, however, is said to 

 extend to Louisiana, it probably occurs occasionally in the southern part of 

 the State, and is reported by fishermen to be common in the rapids of the 

 Wabash. In Northern and Central Illinois it is found in streams of all sizes, 

 from small creeks to the Illinois River, and is also common in the smaller 

 ]akes. 



Genus 19. Pomoxys, Raf. 



Croppies. 



41. Pomoxys sparoides, Lac, Black Croppie; Calico Bass; Grass Bass; 



Barfish; Butter Bass. 



(Bui. II, 47; Pomoxys nigromaculatus.) 



Found, like the preceding, throughout Illinois, but commonest to the north, 

 occurring in both lakes and streams; most abundant in the former. 



42. Pomoxys annularis, Raf. — Croppie; Pale Croppie. 



Ranges throughout Illinois from Galena to Cairo. Confined principally to 

 the larger streams and their immediate ttributanes, it becomes rapidly more 

 abundant as we pass from north to south, finally virtually replacing the pre- 

 ceding species. 



Genus 20. Centrarchus, C. & V. 



43. Centrarchus macropterus, Lac. 



(Bui. II, 47; Centrarchus irideus.) 



This is also a species confined in Illinois to the southern part of the State, 

 where we have taken it in Cache river, in Clear and Drury creeks, in Great 

 House creek, near Mt. Carmel, and in various ponds and sloughs in the river 

 bottoms of that region. 



Family VI. ELASSOMATID.E. 

 Genus 21. Elassoma, Jordan. 



44. Elassoma zonatum, Jordan. 



A southern species, not collected by us north of St. Franeisville, in Law- 

 rence county. Not uncommon in small, muddy pools. 



Family VII. APHREDODERID.E. 

 Genus 22. Aphredoderus, Le Sueur. 



45. Aphredoderus sayanus, Gilliams. — Pirate Perch. 



(Bui. II, 48; Aphredoderus isolejjis.) 



Thi-oughout the State from the Calumet to Union county and the Wabash 

 but far the most abundant southward. Occurs almost invariablj' in small 

 streams only, but occasionally taken in the Illinois. One of the commonest 

 species in mud holes in the Mississippi bottoms, in Southern Illinois. Very 

 rare in the central prairie region. 



—5 F. C. 



