Occasional Papers of the Museum of Zoology 3 



h". Cross-bands less than 50; 21 (sometimes 23) rows 



of scales L. getulus gelulus (Linnaeus). 



(New Jersey to Mobile Bay and central Florida.) 

 h^ Cross-bands more than 50, or nearly indistinguish- 

 able; 23 (sometimes 21) rows of scales; scales 

 between the cross-bands usually white at base. 

 L. getulus floridana Blanchard. 

 (Central to southern Florida.) 

 g'. No dorsal cross-bands distinguishable; dorsal scales 

 light at base, shading gradually into a dark distal 



border L. getulus brooksi Barbour. 



(Extreme southern Florida.) 

 V. Posterior chin shields generally much shorter and nar- 

 rower than anterior and separated by one or two small 

 scales; pattern of rings, or of longitudinal stripes of white 

 or yellowish. 



i'. A dorsal longitudinal stripe, complete or inter- 

 rupted. 



j'. Dorsal stripe white or yellow, sharply defined 

 on a dark brown or black ground color. 



L. calif orniae calif orniae (Blainville). 

 (Fresno County, California, to northern 

 Lower California.) 

 j'. Dorsal stripe poorly defined, of light brown 

 or cinnamon on a dark-brown ground color; 

 belly uniform brown. 



L. calif orniae nitlda (Van Denburgh). 

 (Southern Lower California.) 

 i*. Pattern of rings. 



k'. White scales^ white to their bases, forming 

 rings of uniform white; white bars on 

 prefrontals broad, convex behind; infra- 

 labials usually 9. 



L. getulus boylii (Baird and Girard). 

 (California, Nevada, southwestern Utah, 

 northern and western Arizona, and 

 northern Lower California.) 

 k'. White scales^ mostly brown at their 

 bases. White bars on prefrontals broad 

 or narrow. Infralabials 9 or 10. 



^ Specimens may be found which can be accurately identified only by 

 locality; in particular it should be noted that young e.xamples of yunieiisis and 

 conjuncla may resemble boylii. 



