The natural enemies include young of the copperhead. The bullfrog and leopard frog probably take heavy toll of both the adults and the newly metamorphosed young at the breeding ponds. Reproductive success of the ant-eating frogs was much greater in 1954 when these ranids were unusually scarce. The short-tailed shrew is an important enemy. On occasion it took heavy toll of frogs trapped in pitfalls, and many of the larger adults were scarred or mutilated from bites, probably of the shrew. Each of several frogs was found consistently under the same rock for periods of weeks. The hundreds of other frogs that were marked were rarely found twice in any one spot. Usually an individual recaptured after weeks or months was still near the original site. In many instances the distance involved was only a few yards, but there is some evidence that home ranges may be as long as 400 feet in greatest diameter. Of those caught in two or more different years only 15 per cent were shown to have moved more than 400 feet. These few exceptionally long movements, up to 2000 feet, involve shifts in home range or migrations motivated by reproductive urge. LITERATURE CITED ANDERSON, P. 1942. Amphibians and reptiles of Jackson County, Missouri. Bull. Chicago Acad. Sci., 6: 203-220. ANDERSON, P. K. 1954. Studies in the ecology of the narrow-mouthed toad, Microhyla carolinensis carolinensis. Tulane Studies in Zool., 2: 15-46. BLAIR, A. P. 1950. Note on Oklahoma microhylid frogs. Copeia, 1950: 152. BOGERT, C. M. 1949. Thermoregulation in reptiles, a factor in evolution. Evolution, 3: 195-211. BRAGG, A. N. 1943. Observations on the ecology and natural history of Anura, XV. The hylids and microhylids in Oklahoma. Great Basin Nat., 4: 62-80. de CARVALHO, A. L. 1954. A preliminary synopsis of the genera of American microhylid frogs. Occas. Papers Mus. Zool. Univ. Michigan, no. 555: 19 pp., 1 pl. DICE, L. R. 1923. Notes on the communities of vertebrates of Riley County, Kansas, with especial reference to the amphibians, reptiles and mammals. Ecology, 4: 40-53. FITCH, H. S. 1954. Life history and ecology of the five-lined skink, Eumeces fasciatus. Univ. Kansas Publ. Mus. Nat. Hist., 8: 1-156. FREIBURG, R. E. 1951. An ecological study of the narrow-mouthed toad (Microhyla) in northeastern Kansas. Trans. Kansas Acad. Sci., 54: 374-386. HECHT, M. K., and MATALAS, B. L. 1946. A review of the Middle American toads of the genus Microhyla. American Mus. Novitates, no. 1315: 1-21. LOOMIS, R. B. 1945. Microhyla olivacea (Hallowell) in Nebraska. Herpetologica, 2: 211-212. MITTLEMAN, M. B. 1950. Miscellaneous notes on some amphibians and reptiles from the southeastern United States. Herpetologica, 6: 20-24.