CYPRLNID.E. cvm. 297 



forehead, etc., rosy in spring; sides sometimes rosy 

 tinted; golden dorsal and lateral stripes, conspicuous in 

 life as in most silvery species; head short, somewhat 

 pointed, 5 in length; depth 5 to 5; eye 4 in head; 

 D. I, 8; A. I, 10; lat. 1. 38; L. 4 to 5. Great Lakes and 

 Ohio Valley; abundant in the larger streams; even more 

 graceful in form and delicate in coloration than the pre- 

 ceding. 



4. HI. dinemus, (Raf.) Jor. EMERALD MINNOW. Color- 

 ation exactly as in M. rubellus, but the body very 

 slender and less compressed, more elongated than in any 

 other of our Cyprinidce, the depth being only from one- 

 sixth to one-seventh of the length; head 4f in length; 

 eye 3 in head; fins as in preceding; L. 4 to 5. L. Mich- 

 igan and Ohio Valley, in the larger streams, like the 

 others, "going in flocks." (A. jaculus and A. arge^ 

 Cope.) (This is Rafinesque's "Emerald Minnow," the 

 type of his genus Minnilus. This species and the two 

 preceding are not very well separated.) 



5. M. micropteryx, (Cope) Jordan. SMALL -FINNED 

 MINNOW. Resembles M. rubrifrons, but the fins all very 

 low, the ventrals scarcely reaching to the line of the 

 middle of dorsal; head 4^- in length; depth 5^- to 5f ; 

 lat. 1. 39; L. 3. Tennessee and Cumberland Rivers. 



6. M. photogenis, (Cope) Jor. WHITE -EYED SHINER. 

 An extremely variable species, differing from all of the 

 preceding in the less posterior position of the dorsal, 

 and in the rather more compressed form; depth 4 to 7 

 in length; head 4 to 4 in length; eye 3 in head, large 

 and white; olive green; no red pigment; sides silvery; 

 male minutely tuberculate about the head in spring; 

 dorsal fin beginning much nearer caudal than end of 



