Saya mau tau Spesies dari Nerodia

Nerodia clarkii (BAIRD & GIRARD, 1853)

Nerodia cyclopion (DUMÉRIL, BIBRON & DUMÉRIL, 1854)

Nerodia paucimaculata (TINKLE & CONANT, 1961)

Baird, S.F., and C.F. Girard. 1853. Catalogue of North American Reptiles in the Museum of the Smithsonian Institution. Part I.—Serpents. Smithsonian Institution. Washington, District of Columbia. xvi + 172 pp. (Genus Nerodia, p. 38.)

Clay, W.M. 1938. A Synopsis of the North American Water Snakes of the Genus Natrix. Copeia 1938 (4): 173-182.

Conant, R. 1975. A Field Guide to Reptiles and Amphibians of Eastern and Central North America, Second Edition. Houghton Mifflin. Boston. xviii + 429 pp.  (paperback). (Genus Natrix, p. 139.)

Schmidt, K.P., and D.D. Davis. 1941. Field Book of Snakes of the United States and Canada. G.P. Putnam's Sons. New York. xiii + 365 pp. (Genus Natrix, pp. 205–206.)

Wright, A.H., and A.A. Wright. 1957. Handbook of Snakes of the United States and Canada. Comstock. Ithaca and London. 1,105 pp. (in 2 volumes) (Genus Natrix, p. 467.)

Animal Diversity Web: Nerodia sipedon

Water Snakes - diet, life-cycle, habitats and sub-species