BULLETIN FLORIDA STATE MUSEUM Miller, Robert Rush 1957. Utilization of x-rays as a tool in systematic zoology. Systematic Zool., 6(1): 29-40. Miller, Rudolph J. 1962. Sexual development and hermaphroditism in the hybrid cyprinid, No- tropis cornutus x N. rubellus. Copeia, 1962(2): 450-452. 1963. Comparative morphology of three cyprinid fishes: Notropis corutus, Notropis rubellus, and the hybrid, Notropis cornutus x Notropis ru- bellus. Am. Midland Naturalist, 69(1): 1-33. Mitchill, Samuel L. 1817. Report on the ichthyology of the Walkill, from specimens of fishes pre- sented to the Society (Lyceum of Natural History) by Dr. B. Akerly . Am. Monthly Mag. and Crit. Review, vol. 1, no. 4, pp. 289-290. Moore, George A., and John M. Paden 1950. The fishes of the Illinois River in Oklahoma and Arkansas. Am. Mid- land Naturalist, 44(1): 76-95. Murray, Merritt J. 1938. Survey of some northern Indiana streams with special reference to trout production. Invest. Indiana Lakes and Streams, Indiana Dept. Cons., 1(7): 80-99, 7 figs. O'Donnell, D. John 1935. Annotated list of the fishes of Illinois. Bull. Ill. Nat. Hist. Surv., 20: 473-491, figs. 1-2. Ortenburger, A. I., and Carl L. Hubbs 1927. A report on the fishes of Oklahoma, with descriptions of new genera and species. Proc. Okla. Acad. Sci. (1926), 6(19): 123-141. Outten, L. M. 1957. A study of the life history of the cyprinid fish Notropis coccogenis. Jour. Elisha Mitchill Sci. Soc., 73(1): 68-84; Pfeiffer, Roman A. 1955. Studies on the life history of the Rosyface shiner, Notropis rubellus. Copeia, 1955(2): 95-104. Pickens, A. L. 1928. Fishes of upper South Carolina. Copeia, 167: 29-32. Putnam, F. W. 1863. List of the fishes sent by the Museum to different institutions, in ex- change for other specimens, with annotations. Bull. Mus. Comp. Zool., 1(1): 1-16. Radforth, Isobel 1944. Some considerations on the distribution of fishes in Ontario. Contr. Roy. Ont. Mus. Zool., 25: 1-116, figs. 1-32. Vol. 8