20 University of Michigan 



with others graduated down. Caudal deeply emarginate, 

 broad lobes rounded, and upper trifle longer than lower. 

 Pectoral rather long, uppermost rays longest, reaches 3/5 

 space to ventral. Latter inserted trifle before dorsal, reaches 

 about 3/4 to anal. Vent close before anal. 



Color in alcohol faded dull brownish, trunk more or less 

 unicolor or back scarcely darker. Pale gray, leaden streak 

 from level with eye below shoulder to middle of caudal base, 

 and in this course traces of dull olive-brown band beginning 

 on side of snout coursing through eye along upper side of 

 head and back to caudal, at bases of median rays of which 

 jet-black spot size of pupil. Side of head and under surface 

 whitish with silver}^ reflections. Also silvery reflections on 

 lower side of trunk. Iris silvery to whitish, except where 

 dark lateral band crosses. Fins all plain pale brownish. 

 Traces of a dusky blotch at tip of second simple dorsal ray 

 which extends on two following rays at this point. Also out- 

 er ends of dorsal rays pale brownish. 



I^ength 70 mm. 



No. 5,019, A. X. S. P., cotype of Hybopsis fiidita)is Cope, 

 in the Detroit River. E. D. Cope. Also Nos. 5,020 and 5,021, 

 same data, and 41 examples from Grosse Isle. 



Notropis hetcrodon (Cope) 



Alburnops heterodon Cope. Proc. Acad. Nat. Sci. Phila., 1864, p. 

 281. Lansing and Grosse Isle. 



Although the types are now lost ]\Ir. Hebard procured it at 

 Pequaming, Baraga County. 



Notropis frctensis (Cope) 



Hybopsis fretensis Cope, Trans. Amer. Philos. Soc. Phila., (2) XIII, 

 1866, p. 382. Near Detroit. 



Notropis fretensis Fowler, Proc. Acad. Nat. Sci. Phila., 1910, p. 274, 

 PI. 15, fig. 3 (type). 



