Tachymenis is a genus of venomous snakes belonging to the familyColubridae. Species in the genus Tachymenis are commonly known as slender snakes or short-tailed snakes and are primarily found in southern South America. Tachymenis are rear-fanged (opisthoglyphous) and are capable of producing a medically significant bite, with at least one species, T. peruviana, responsible for human fatalities.[1]
Boulenger GA (1896). Catalogue of the Snakes in the British Museum (Natural History). Volume III., Containing the Colubridæ (Opisthoglyphæ and Proteroglyphæ) ... London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xiv + 727 pp. + Plates I-XXV. (Genus Tachymenis, pp. 117–118; T. peruviana, p. 118; T. affinis, new species, p. 119 + Plate VII, figure 1 [three views]).
Freiberg M (1982). Snakes of South America. Hong Kong: T.F.H. Publications. 189 pp. ISBN0-87666-912-7. (Tachymenis, pp. 75, 76, 111).
Wiegmann AFA (1835). "Beiträge zur Zoologie, gesammelt auf einer Reise um die Erde, von Dr. F.J.F. Meyen, siebente Abhandlung. Amphibien ". Nova Acta Physico-Medica Academiae Caesareae Leopoldino-Carolinae17: 185-268. (Tachymenis, new genus, pp. 251–252; T. peruviana, new species, pp. 252–253 + Plate XX, figure 1). (in German and Latin).