ETHEOSTOMATID^. -15 



8. Alvordius peltatus, (Staufifer,) Cope & Jor.* — Conestoga River, 



Pennsylvania. 



9. Alvordius macrocephalus, Cope. — Upper Ohio Valley. 



10. Alvordius phoxocephalus, (Nelson) Cope & Jordan. — Indiana to 



Tennessee and Kansas. 



Peecina, Haldeman. 



11. Percina caprodes, (Raf.) Grd. — Great Lake Region to Alabama. 



12. Percina earbouaria, (B. & G.) Grd. — Texas. 



13. Percina zebra, Agassiz. — Great Lake Region {d. s.). 



14. Percina manitou, Jordan. — Indiana to Minnesota. 



Rheocrypta, Jordan. 



15. Rheocrypta copelandi, Jordan. — Wabash Valley. 



Imostoma, Jordan. 



16. Imostoma shumardii, (Grd.) Jor. — Indiana to Iowa and Arkansas. 



DiPLESiUM, Bafinesque. 



17. Diplesium blennioides, Raf. — Mississippi Valley. 



18. Diplesium newmani, {Ag.) Jor. & Copel. — Tennessee River. 



19. Diplesium simoterum, (Cope) Copeland. — Cumberland and Upper 



Tennessee Rivers. 



BOLEOSOMA, Be Kay. 



20. Boleosoma olrastedi, (Storer) Ag. — Great Lakes to New England 



and soutb to Georgia, east of the Alleghanies. 



21. Boleosoma atromaculata, (Grd.) Jor. — New York to Virginia (? var.). 



22. Boleosoma nigra (Raf.) Jor. — Mississippi Valley and Upper Great 



Lakes. 



23. Boleosoma eesopus, Cope.* — Alleghany River. 



24. Boleosoma messea, (Cope) Jordan. — Kansas {d. g.). 



Arlina, Girard. 



25. Arlina effulgens, Grd. — Maryland to North Carolina {d. g.). 



26. Arlina stigmsea, Jordan. — Georgia to Louisiana. 



27. Arlina maculaticeps, (Cope) Jordan* {d. g.). 



28. Arlina atripinnis, Jordan. — Cumberland River. 



