Results of the Carnegie Museum of Natural History expeditions to Belize. I. Systematic status and geographic distribution of Sibon neilli (Reptilia, Serpentes)

Abstract

The nominal species Sibon neilli Henderson, Hoevers and Wilson (type-locality, "vicinity of Beiize City, Belize") is shown to be a southern subspecies of Sibon sanniola Cope (type-locality, "Chichen Itza, Yucatan, Mexico"), confirming the arrangement proposed by Kofron (1985). Sibon sanniola neilli differs Sibon s. sanniola in having a banded, rather than spotted, color pattern, and higher ventral and subcaudal scale counts.