Phrynonax

Phrynonax is a genus of snakes in the family Colubridae. The genus is endemic to the New World

Geographic range
Species in the genus Phrynonax are found in South America, Central America, and Mexico.

Species
Three species are recognized as being valid.


 * Phrynonax poecilonotus (Günther, 1858) - puffing snake
 * Phrynonax sexcarinatus (Wagler, 1824) - northeastern puffing snake
 * Phrynonax shropshirei Barbour & Amaral, 1924 - Shropshire's puffing snake

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Phrynonax.

Etymology
The specific name, shropshirei, is in honor of James B. Shropshire, "Chief Sanitary Inspector, U.S. Army, Canal Zone", who collected the paratype.