128 
Charles R. Blem 
Rahn, H. 1942. The reproductive cycle of the prairie rattlers. Copeia 1942(4); 
233-240. 
St. Girons, H. 1957. Le cycle sexuel chez Vipera aspis (L) dans I’ouest de la 
France. Bull. Biol. Fr. Belg. 9y(3):284-350. 
Tinkle, Donald W. 1957. Ecology, maturation and reproduction of Thamnophis 
sauritus proximus. Ecology 38{\):69-71. 
. 1962. Reproductive potential and cycles in female Crotalus atrox from 
northwestern Texas. Copeia 1962(2):306-313. 
Wharton, Charles H. 1966. Reproduction and growth in the cottonmouths, 
Agkistrodon piscivorus Lacepede, of Cedar Keys, Florida. Copeia 1966(2): 
149-161. 
. 1969. Cottonmouth moccasin on Sea Horse Key, Florida. Bull. Fla. 
State Mus. Biol. Sci. 74(3):227-272. 
Wood, John T. 1954. The distribution of poisonous snakes in Virginia. Va. J. Sci. 
5(3): 152-167. 
Wright, Albert H., and Anna A. Wright. 1957. Handbook of snakes of the United 
States and Canada. Vol. 2. Comstock Publ. Co., Ithaca. 1 106 p. 
Accepted 8 October 1980 
