Cylindrophis opisthorhodus, or the island pipe snake, is a species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of snake

Snake

Snakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales...

 in the Cylindrophiidae family.

Description

Dorsally pale brown or buff, with small black spots irregularly disposed. Head yellowish, much spotted with black. Ventrally white, with continuous or broken and alternating black crossbars, which are connected on the sides by a black uninterrupted stripe running from behind the head to the base of the tail; a much interrupted black stripe along the middle of the belly. Anal region black. Lower surface of tail bright pink [to which the specific epithet, opisthorhodus, meaning "rose posteriorly", refers].

Dorsal scales in 23 rows. Ventrals 184-187, only slightly larger than the adjacent scales; anal divided; subcaudals 6-7.