Pseustes poecilonotus poecilonotus (Günther)
Chinajá, 3; 20 km. NNW of Chinajá, 1.
Two juveniles were on the forest floor; one juvenile and an adult were on low bushes. The juveniles have a tan dorsum with reddish brown blotches; the belly is gray, and the iris is cream-color above and brown below. The one adult is olive-brown above and creamy white below on the anterior three-fourths of the body; posteriorly it is black above and below. There are no paravertebral dark stripes nor pale spots on the dorsal scales.
Two specimens (one juvenile and the adult) when encountered compressed the anterior part of the body laterally and struck repeatedly. Locally the adults are called sumbadora.
Sibon dimidiata dimidiata (Günther)
20 km. NNW of Chinajá, 2.
Both snakes were obtained from trees when they were felled. In life the dorsum was pinkish orange with dark chocolate brown blotches narrowly edged with black.
Sibon nebulata nebulata (Linnaeus)
20 km. NW of Chinajá, 1.