LAMPREYS AND FISHES OF INDIANA. 271 



DiPLESIUM BLENNIOIDES (Raf.). 



Green-sided Darter. 



Jordan and Gilbert, 1882, 8, 496. 



Body elongate, little compressed. Depth in the length aliout five 

 times. Head short, in length four and one-half times, compressed, the 

 profile descending rapidly in front of the eyes. Eyes high up, the inter- 

 orbital space very narrow. Mouth small, inferior, the maxillary not 

 reaching back to a j^erpeudicular from the front of the eye ; bound by 

 skin closely to the preorbital. Premaxillary somewhat protractile, but 

 with a narrow band of skin joining the lip with the forehead. Lateral 

 line complete. Scale 6-65 to 70-8. Dorsal rays XIII, 13. Anal rays 

 II, 8. Pectorals and ventrals long, reaching nearly to the vent. Cheeks 

 and opercles scaly. Colors in life very brilliant. General color olive, 

 darkest along the back. Along the sides are about eight Y-shaped 

 blotches of green. Many scales with orange spots. Spinous dorsal fin 

 orange-brown at the base, l)lue above ; soft dorsal bluis-h-green and red. 

 Females less brilliantly colored. Length occasionally as much as five 

 inches. 



Pennsylvania to Kansas and south. Abundant in all suitable streams 

 in Indiana. Seen by Rafinesque at the Falls of the Ohio and in the Wabash 

 River. Carroll County (23, '88, 50); Clark and Ohio counties (23, '88, 

 56); Franklin County (o, No. 2, 8);. Monroe County (1, '85,411); 

 Marion County (1, '77, 43); Lower Wabash River (1, '77, 43); East 

 Fork White River (23, '84, 204); Marshall, Cass and Whitley counties 

 (4, '88, 159); Owen County (4, '88, 167); Vigo County (16, 96) ; Eel 

 River basin (4, '94, 39) ; Decatur County (Shannon); Henry County 

 (24, '93, 102). 



This is one of our most brilliantly colored, most beautiful, and most 

 abundant fishes. Little has been published concerning its habits. The 

 habits of our Ethestomatince would richly repay the observations of our 

 naturalists. 



Genus PERCINA Haldeman. 



Body long and slender. Head broad between the eyes. Snout pig- 

 like, projecting beyond the mouth. Premaxillaries not protractile. 

 Gill membranes not united across the isthmus. Teeth on vomer and 

 palatines. Scales small, about ninety along the lateral line. Mid ven- 

 tral line with a series of enlarged, spinous scales, which may fall off and 

 leave a naked strip. 



