Total length, 570 millimetres; tail 75.

Habitat: Mexico.

(18) L. lateralis.—Snout rounded; 9 supralabials; scales in 21 or 23 rows, rather strongly keeled; 171 ventrals; 59 subcaudals, in a single row. Tail prehensile.

Colour green, with a yellow line on each side of the body.

Total length, 485 millimetres; tail 75.

Habitat: Costa Rica.

(19) L. bicolor.—Very similar to the foregoing; scales in 21 rows; 164-167 ventrals; 62-67 subcaudals, in a single row.

Colour uniform green, yellowish on the belly.

Total length, 375 millimetres; tail 60.

Habitat: Guatemala.