118 VENOMS 



which may form a zigzag band ; belly whitish, uniform or spotted 

 with dark brown. 



Total length, 800 millimetres ; tail 90. 



Habitat : Mexico and Central America. 



(13) L. godmani. — Snout broad, rounded ; 9 or 10 supralabials ; 

 scales in 21 rows, strongly keeled ; 135 — 142 ventrals ; 22 — 34 

 subcaudals in a single row. 



Colour brown, with or without a dorsal series of large darker 

 spots; belly yellowish, more or less spotted with grey or blackish. 

 Total length, 610 millimetres ; tail 60. 

 Habitat : Guatemala. 



(14) L. lansbergii. — Snout pointed, turned up at the end, as in 

 Vipera aspis ; scales in 25 — 27 rows, strongly keeled; 152 — 159 

 ventrals; 29 — 35 subcaudals in a single row. 



Colour yellowish-brown, pale brown, or grey, with a dorsal 

 series of large rhomboidal or squarish spots, usually divided by a 

 narrow yellow or orange vertebral line ; cheeks blackish ; belly 

 powdered with brown, with or without whitish spots. 



Total length, 575 millimetres ; tail 70. 



Habitat : from Southern Mexico to Colombia, Venezuela, 

 and Brazil. 



(15) L. br achy stoma. — Similar to the foregoing species ; scales 

 in 23 (rarely 25) rows ; 132 — 150 ventrals ; 27 — 38 subcaudals. 



Total length, 500 millimetres ; tail 50. 



Habitat : Southern Mexico and Central America. 



(16) L. bilineatus. — Snout rounded; 7 or 8 supralabials; scales 

 in 27 — 35 rows, strongly keeled ; 198—218 ventrals ; 59 — 71 

 subcaudals, all or majority in two rows. Tail prehensile. 



Colour green, uniform or spotted with black ; a lateral yellow 

 streak ; belly white ; end of tail reddish. 

 Total length, 840 millimetres ; tail 125. 

 Habitat : Brazil, Bolivia, Peru, Ecuador. 



(17) L. undulatus. — Snout short, rounded ; 11 supralabials ; 

 scales in 21 rows, the dorsals strongly or very strongly keeled ; 

 149 — IVl ventrals ; 41 — 49 pairs of subcaudals. Tail prehensile. 



