386 PROCEEDINGS OF THE ACADEMY OF [1893. ON THE BATRACHIA AND REPTILIA OF THE PLAINS AT LATITUDE 36° 30'. BY E. D. COPE. The following species were obtained by the writer and Professor A. P. Brown, of the University of Pennsylvania, at the following localities: Fort Supply, in northwest Oklahoma; Miami and Mo-beetie in the northeastern part of the Panhandle of Texas, and Hen-nessy, in central Oklahoma. For the greater number of species obtained at Fort Supply, I am indebted to Dr. Corbusier, U. S. A., whose material aid I hereby gratefully acknowledge. BATRACHIA. Amblystoma tigrinum Greeii. Fort Supply ; Hennessy. Bufo lentiginosis americanus Loec. Fort Supply. Chorophilus triseriatus clarkii Bd. Abundant and noisy in pools near the Cimmaron River, at Tucker, Oklahoma. Similar to the individuals reported by me from Claren-don, Texas. 1 REPTILIA. Cistudo ornata Agass. Fort Supply. Cinosternum flavescens Agass. Professor Brown found a living specimen of this species about six miles west of Mobeetie, Texas. This is much the most northern locality recorded for the species. Chelydra serpentina L. Hennessy, Oklahoma Territory. Crotaphytus collaris Say. Fort Supply and Miami. Holbrookia maculata B. & G. Fort Supply and Mobeetie. 1 Proceedings Academy Natural Sciences of Philada., 1892, p. 333.