Elaphe 
Lampropeltis 
Malpolon 
Masticophis 
guttata 
longissima 
obsoleta 
quadrivirgata 
calligaster 
getulus 
mexicana 
pyromelana 
triangulum 
monspessulanus 
flagellum 
taeniatus 
Munphy, 1973 
Shaw, 1951 
Bellairs, 1970 
Carpenter and Ferguson, 
1978 
Muxphy, 1973 
Pope, 1937 
Shaw, 1951 , 
Shine, etal., 198] 
Stemmler-Morath, 1935 
Brecke, et al., 1977 
Gillingham, 1980 
Littleford and Keller, 1946 
Mitchell, 1981 
Rigley, 1971 
Shine, 1978 
Shine, et al., 1981 
Stickel, et al., 1980 
Fukada, 1961 
Shine, 1978 
Carpenter, 1984 
Moehn, 1967 
Shine, et al, 1981 
Carpenter, 1977 
Carpenter and Gillingham, 
oe 7 
Cliank,; et -al.,r 19/84 
Lewke, 1979 
Neitman, 1980 
Murphy, et al., 1978 
Shine, et al., 1981 
Martin, 1976 
Fitch and Fleet, 1970 
Murphy, 1973 
Shaw, 1951 
Shane yreicvale, 19:78 
Shaw, 1951 
Kennedy, 1965 
Bennion and Parker, 1976 
Parker, 1974 
Shine, 1978 
Shine, et al., 1981 
