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search Hypsiglena torquata jani.jpg Texas night snake Hypsiglena
torquata jani Scientific classification Kingdom: Animalia
Phylum: Chordata Subphylum: Vertebrata Class: Reptilia Order:
Squamata Suborder: Serpentes Family: Colubridae Subfamily:
Dipsadinae Genus: Hypsiglena Cope, 1860 Hypsiglena torquata
distribution.svg  Hypsiglena is a genus of small, rear-fanged,
colubrid snakes commonly referred to as night snakes. The genus
consists of two distinct species.[2] Many subspecies may be
considered synonymous depending on the source.  Species and
Subspecies[edit]  Geographic range[edit]  Hypsiglena are found
throughout the southwestern and western United States, from
Texas and Kansas, west to California, north to Washington, and
south into Mexico, as well as on islands off the coasts of
Mexico.   Their preferred habitat is semiarid desert regions
with rocky and sandy soils.   Night snakes typically do not
exceed a total length of 40 cm (16 in). They are