Pseudalsophis occidentalis (Western Galapagos Racers)
Pseudalsophis occidentalis (Van Denburgh, 1912)
This species is distinguished from other species of Pseudalsophis by the combination of the following characters: (1) dorsal coloration very dark compared with P. biserialis and P. dorsalis, including the supralabials and the rest of the head; (2) venter heavily pigmented; (3) ventrals 228-246 in…