438 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



§ Cynoperca Gill & Jordan. 1878. 



563. StizostethiuM canadense (Smith) Jor. Saint Lawrence Eiver to the 

 Upper Missouri. 



ETHEOSTOMATID^. 

 127. — Ammocrypta Jordan. 1877. Sand Divers. 



564; Ammocrypta heanii Jordan. Louisiana. 



128. — Pleurolepis Agassiz. 1863. Pellucid Darters. 



565. Pleurolepis pellucidus (Baird) Agassiz. Ohio Valley. 



566. Pleurolepis vitreus (Cope) Jord. & Copel. North Carolina. 



567. Pleurolepis asprellus Jordan. Illinois. 



129. — Percina Haldeman. 1842. Log Perch. 



568. Percina caprodes (Eaf.) Grd. Great Lake Region to Alabama. 



569. Percina carhonaria (B. & G.) Grd. Texas. 



570. Percina manitou Jordan. Indiana to Minnesota. 



130. — Alyordius Girard. 1859. Black-sided Darters. 



571. Alvordius onaculatus Grd. Western streams. [Etheosto^na Men- 



nioides Ag. A. aspro Cope & Jor.) 



572. Alvordius macrocephalus Cope. Ohio Valley. 



573. Alvordius phoxocephalus (Nelson) Cope & Jor. Indiana to Tennes- 



see and Kansas. 



574. Alvordius crassus Jordan & Bray ton. Santee River. 



575. Alvordius tievisensis Cope. North Carolina. 



576. Alvordius peltatiis (Stauffer) Cope & Jor. Conestoga River, Penn- 



sylvania. 



13L — Ericosma Jordan. 1877. Gilded Darters. 



577. Ericosma evides Jordan & Copeland. Wabash Valley. 



132. — Hadropterus Agassiz. 1854. 



{Rypoliomus Cope, 1870. Plesioperca Le Vaillaut, 1873.) 



578. Hadropterus nigrofasclatus Ag. South Carolina to Louisiana. 



579. Hadropterus tessellatus Jor. Alleghany River. 



580. Hadropterus aurantiacus (Cope) Jor. Virginia to Tennessee. 



133. — Imostoma Jordan. 1877. Big-headed Darters. 



581. Imostoma shumardi (Grd.) Jor. Indiana to Iowa and Arkansas. 



134. — Rheocrypta Jordan. 1877. 



582. Bheocrypta copelandi Jordan. Wabash Valley. 



