Pakistan Sand Racer or Leith's Sand Snake Psammophis leithii 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...

 found in Pakistan

Pakistan

Pakistan , officially the Islamic Republic of Pakistan is a sovereign state in South Asia. It has a coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by Afghanistan and Iran in the west, India in the east and China in the far northeast. In the north, Tajikistan...

, Afghanistan

Afghanistan

Afghanistan , officially the Islamic Republic of Afghanistan, is a landlocked country located in the centre of Asia, forming South Asia, Central Asia and the Middle East. With a population of about 29 million, it has an area of , making it the 42nd most populous and 41st largest nation in the world...

 and western India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 (Kachchh, Rajasthan, Maharashtra).

Description

Rostral broader than deep, visible from above; nostril between two or three shields, the posterior nasal being frequently divided into two; internasals about half the length of the pre-frontals; frontal very narrow, longer than its distance from the end of the snout, nearly as long as the parietals; loreal about twice as long as deep; pre-ocular single, in contact with the frontal; two post-oculars ; temporals 1+2 or 2+2; upper labials 8 or 9, fourth and fifth or fifth and sixth entering the eye j 5 lower labials in contact with the anterior chin-shields, which are a little shorter than the posterior. Scales in 17 rows. Ventrals 177-188; anal usually entire; sub-caudals 82-138. Pale greyish or yellowish above, with black dots or four longitudinal brown bands which are usually edged with black, the outer passing through the eyes; lower parts white, uniform or spotted or marked with grey or olive in the middle, with or without a dark lateral line or series of dots. Total length 3 feet 3 inches ; tail 1 foot.