CATOSTOMID^. 39 



ascending even the smallest brooks," May 26 given as a breeding 

 date, Parker, Williamson and Osburn, 1898 ; Ohio river and lee 

 creek at Ironton, John's creek at Waterloo, Huron river at Milan, 

 Sandusky Baj^, Ashtabula creek at Ashtabula, Wabash river at 

 Celina, Stillwater and Wolf creeks near Dayton, North Fork of 

 Licking river at Newark, R. C. Osburn, 1899; Niggermill Run 

 at Salem, E. B. Williamson, 1900 ; Cuyahoga river at Hawkins, 

 Grand river at Painesville, Chagrin river at Willoughby, Wheel- 

 ing creek at Bridgeport, Ohio river and McMahon creek at 

 Wheeling, Licking reservoir, R. C. Osburn, 1900. 



Moxostoma breviceps (Cope). 



Form of a Corcgonas, with, deep, compressed body, small head, and a 

 conic snout, which overhangs the very small mouth. Caudal fin, with the 

 upper lobe falcate, much longer than the lower. Dorsal fin short, high, 

 falcate, the anterior rays 1% to 1%, times base of fin, the free border much 

 concave. Depth 3^ in length. Head 5 to 5%. D. 12 or 13. Scales 6-45-5. 

 Lower fins bright red. 



"Abundant in Lake Erie; our specimens from Sandusky, 

 Toledo and Cincinnati," Jordan and Evermann (Bull. 47, U. S. 

 Natl. Mus.). 



Genus: Placopharynx. 



Placopharynx duquesnii (Le Sueur). 



Head 4 ; snout rounded, projecting ; lower jaw somewhat oblique when 

 closed ; eye /[]4 in head. Body rather stout, somewhat compressed, in form 

 like that of M. aureolum ; D. 13 ; A. 7 (not 9, as is usually given, in any 

 Ohio specimens I have seen); scales 6-45-6. Lower pharyngeal bones very 

 strong, the lower teeth on these bones very strong and molar-like, little 

 compressed, and having broad grinding surfaces. 



This species so closel} r resembles M. aureolam that it can be 

 positively distinguished only by the appearance of the lower 

 pharyngeal teeth, and it has no doubt been much overlooked. 

 Recorded by Jordan (Ohio Rept.) on the strength of a skeleton 

 found by Dr. J. M. Wheaton in the Scioto river at Columbus, one 

 of the very few specimens known at that time. The species has 

 since proved to be well distributed over the state, though not 

 usually abundant. Hamilton County, not rare in the Ohio, Hen- 

 shall, 1888 ; Lorain County, Lake Erie, common with other 



