Colour pale brown, with a dorsal series of rhomboidal spots, 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.