[2] C. laurenti belongs to the genus Chironius (commonly known as sipos or savanes) in the subfamily Colubrinae of the family Colubridae.

The longest male and female found had a total length (including tail) of 2.15 and 1.78 m (7.1 and 5.8 ft) respectively.

[2][4] The upper (dorsal) coloration varies between grayish, gray-olive, brown-olive, brown and olive.

[2][4] Subadults and some adults have faint whitish crossbands, which are remnants of the juvenile pattern, on the body and the tail.

[2] The known distribution of C. laurenti is restricted to Beni, Cochabamba and Santa Cruz in Bolivia and Mato Grosso in Brazil.