Colour yellowish-brown or pale olive on the back, with dark brown triangles on the sides; posteriorly, the united triangles form cross-bands; a yellowish band from the eye to the side of the neck; belly dark brown with yellowish spots.
Total length, 630 millimetres; tail 100.
Habitat: Peru, Ecuador.
(6) L. pictus.—Snout obliquely truncate; two series of scales between the eye and the labials; scales in 21-23 rows, strongly keeled; 157-172 ventrals; 40-74 pairs of subcaudals.
Colour pale brown, with a dorsal series of large black-edged brown spots, which may form a vertebral zigzag band; a black streak behind the eye, and a vertical bar below the eye; belly yellowish, spotted with brown.
Total length, 310 millimetres; tail 43.
Habitat: Peru.
(7) L. alternatus.—Head narrow, elongate; 8-9 supralabials; scales in 29-35 rows, very strongly keeled; 167-181 ventrals; 34-51 pairs of subcaudals.
Colour brown, very elegantly marked with opposite or alternating pairs of large C-shaped markings, which are dark brown, edged with black and yellow, and separated by narrow interspaces of the ground colour; head dark·brown above, with a ⅄̅-shaped light marking, the transverse bar between the eyes; belly whitish, spotted with brown or black.
Total length, 1,190 millimetres; tail 110.