10 



grayish-brown snake with a series of white crossbars; a 

 whitish blotch on each side of the back of the head; body 

 scales not elongated, arranged in straight rows 

 Lycodon aulicus 



b) Head blunt and enlarged; two oblique whitish stripes 

 edged in black from top of head to back of jaw; irregular 

 whitish crossbars on body edged in black on anterior 

 edge; body scales elongated and arranged in oblique rows 

 Boiaa trigcnata 



13. a) Body colors red, black, and white; white crossbar or 



crossband on top of head 14 



b) Body colors not red, black, and white; no white crossbar 

 or crossband on top of head 15 



14. a) Head slightly elongated; black bands, where present, are 



narrow and do not completely encircle the body; top of 

 head mostly black with three crossbars of white; large 

 eyes Chrysopelea ornata 



b) Head blunt, not elongated; red-brown body color with 

 black crossbars (some individuals may have a black stripe 

 along the midback and crossbars restricted to the sides) ; 

 head black except for a broad white crossband from the 

 anterior edge of the eye to the back of the mouth 

 Calliophis macclellandii 



15. a) Distinct black crossbars on a brown body; black triangle 



on top of snout in front of the eyes; two 

 arrowhead-shaped black bars on head and neck, the tip of 

 the first on the top of the head and the tip of the 

 second at nape; belly white; pupil round; body scales not 



oblique; no enlarged vertebral scales Oligodon 



arnensis 



