This specimen, a male having a body length of 544 mm. and a tail length of 198 mm., was found in a felled tree. In life the belly was pink and black; the dorsal black blotches were narrowly outlined with pink.
Spilotes pullatus mexicanus (Laurenti)
Chinajá, 3; 20 km. NNW of Chinajá, 1; Sayaxché, 1.
This large snake, locally called mica, seems to be equally at home on the ground and in low trees and bushes. It is fast moving for a large snake; two individuals escaped capture. The natives said that this snake eats other snakes, but examination of stomachs revealed no supporting evidence.
Stenorrhina degenhardti (Berthold)
Chinajá, 1.
This specimen, a female having 158 ventrals, 37 caudals, and a total length of 489 mm., was found on the forest floor. On the olive-brown dorsum are 27 irregular, narrow, dark brown, transverse bands. The head is uniform olive-brown; the chin and labials are cream-color. The venter is cream-color with a row of brown spots forming a midventral stripe. A large spider was found in the stomach.
I have refrained from assigning a subspecific name to this snake. Cursory examination of specimens from throughout México and Central America reveals a bewildering array of variation in coloration that suggests that the subspecies mexicanus is not recognizable, or that two species occur sympatrically in parts of southern México and northern Central America.
Tretanorhinus nigroluteus lateralis Bocourt
Chinajá, 1.