12 



10. Schilbeodes eleutheras, (Jordan). Very rare; 

 a single specimen of this rare species from Big Walnut. 

 Distinguished from S. miurus by the free adipose fin, 

 relatively longer upper jaw. and darker and more uni- 

 form coloration. 



11. Schilbeodes miurus, {]orda.n). Generally com- 

 mon, abundant in Big Walnut. Females with eggs from 

 June 25 to July 6. 1897. 



12. Carpiodes velifer, ( Raf.). This species ascends 

 the smaller streams, during the high waters of spring 

 to breed, retreating to the deeper waters of the rivers 

 in May, but frequentU' becoming landlocked. Of much 

 importance as a food fish during the spawning and mi- 

 gratory season, when they are readily taken with 

 seines. 



13. Catostomus comrnersonii, {hacepede). Taken 

 in every stream ; the commonest sucker. 



14. Catostomus nigrieans, Le Sueur. Common 

 in all but the smallest streams. 



15. Erimyzon sucetta, (Lacepede). Taken only 

 in the Scioto, and in streams west of the Scioto where 

 it is generally abundant. A few specimens from Scioto 

 Big Run were, in life, a iDright "goldfish " 3'ellow. 



16. Minytrema melanops, (Raf.). Our handsom- 

 est sucker; rare but of general distribution. 



17. Moxostoma anisurum, (Raf.). Not common, 

 observed only in the larger streams. 



18. Moxostoma aurcolum, {L,e Sueur). Abund. 

 ant, taken in all but the smallest streams. 



19 Placopharynx duquesnii, {he Sueur). Taken 

 only in the Scioto, Olentangy, and Big Darby; not 

 common, not readily distinguished from the preceding 

 species, except by the form of the lower pharyngeal 

 teeth. 



20. Campostoma anomalum, (Raf.). Very 

 abundant everywhere. Frequently observed in large 

 schools on ripples. 



21. Chrosomus erythrogaster, Raf. Occurring 



