61 



Genus 8. Etheostoma, Raf. 



10. Etheostoma eos, Jor. & Copeland. 



(Bui. II, 42; Boleichthys eos: Synop., Pcecilichthys eos.) 

 Not especially common in Illinois; chiefly of northern distribution; most 

 abundant in the lakes, and occurrins: also in the smaller rivers. 



11. Etheostoma fusijorme, Grd. 



(Bui. II, 43; Boleichthys elegans: Synop., 519 & 520; Pcecilichthys butle- 



rianus, Pariltchthys Barrati, Pa;cilichthys fusijormis.) 



This darter, which has appeared in the earlier lists as Boleichthys elegans, 



is southern in its Illinois distribution, not having occurred north of the Kas- 



kaskia river. To the southward it is rather common, in lakes, clear ponds, 



small rivers and creeks. 



12. Etheostoma asprigene, Forbes. 



(Bui. II, 41; Pa'cslichthys asprigenis: Synop., 518; do.) 

 This common species, originallj^ described from the Illinois river, has since 

 been found generally distributed in the central and southern portions of the 

 State, in lakes and rivers, large and small, but has not been taken in 

 Northern Illinois. 



13. Etheostoma cogruleum, Storer. — BLUE Darter; Rainbow Darter; 



Soldier-pish. 

 (Bui. 11, 41; Pacilichthys variatus, Pcecilichthys spectabilis, Pcecilichthys: 

 Synop., 517 & 518; Pcecilichthys cceruleus, Pcecilichthys spectabilis.) 

 The most highly colored of our common darters, occurring throughout the 

 State in lakes, rivers, and creeks, much the most abundant in the latter. 



14 Etheostoma flahellare, Raf. 

 Not common. Clear creeks and rivers in Southern Illinois. 



15. Etheostoma lineolatum, Agassiz. — Striped Darter. 

 (Bui. II, 42; Etheostoma fllabellare, var. lineolatum.) 



Rather rare; chiefly from Northern Illinois, in creeks and rivers. 



16. Etheostoma zonale, Cope. 



(Bui. II, 41; Nanostoma zonale: Synop 510; do.) 

 This little darter is not common in Illinois and is conflned to the northern 

 part of the State, as far as our collections show, where it occurs in creeks 

 and the smaller rivers. 



Genus 9. Hadropterus, Agassiz. 



17. Hadropterus evides, Jordan & Copeland. 



(Bui, II, 39; Ericosma evides: Synop., 503; Alvordius evides.) 



Represented in our Illinois collections only by a few specimens from Rock 

 river. Reported by Dr. Jordan from White river, Indiana, but apparently 

 not collected elsewhere. 



18. Hadropterus aspro, Cope & Jordan.— Black-sided Darter. 



(Bui. II, 39; Alvordius maculatus: Synop., 501; Alcordius aspro.) 



This fine darter is rather common throughout the whole State in large 

 creeks and small rivers, being especially abundant in the Wabash Valley and 

 in the Little Wabash, Saline, and Embarras rivers. A few specimens were 

 taken also in the Illinois. 



