This article's
lead sectionmay be too short to adequately
summarize the key points. Please consider expanding the lead to
provide an accessible overview of all important aspects of the article.(October 2021)
In the genus Atractus the
maxilla is short, with 8–12 teeth; the maxillary and
mandibular teeth decrease in size posteriorly. The head is not distinct from the neck. The eye is small, with a round or subelliptic pupil. The nostril is between two
nasal scales. The
preocular is usually absent, and the
loreal and
prefrontal scales enter the orbit. The body is cylindrical. The
dorsal scales are smooth, without apical pits, in 15 or 17 rows. The
ventral scales are rounded. The tail can be either short or rather long. The
subcaudals are paired.[1]
^
abcBoulenger GA (1894). Catalogue of the Snakes in the British Museum (Natural History). Volume II., Containing the Conclusion of the Colubridæ Aglyphæ. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xi + 382 pp. + Plates I-XX. (Genus Atractus, p. 300).
^
abcdBeolens, Bo;
Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp.
ISBN978-1-4214-0135-5. (Atractus bocki, p. 28; A. bocourti, p. 29; A. riveroi, p. 222; A. roulei, p. 227).
Wagler [JG] (1828). "Auszüge aus seinem [sic] Systema Amphibiorum". Isis von Oken21: 740-744. (Atractus, new genus, pp. 741–742). (in German and Latin).
This article's
lead sectionmay be too short to adequately
summarize the key points. Please consider expanding the lead to
provide an accessible overview of all important aspects of the article.(October 2021)
In the genus Atractus the
maxilla is short, with 8–12 teeth; the maxillary and
mandibular teeth decrease in size posteriorly. The head is not distinct from the neck. The eye is small, with a round or subelliptic pupil. The nostril is between two
nasal scales. The
preocular is usually absent, and the
loreal and
prefrontal scales enter the orbit. The body is cylindrical. The
dorsal scales are smooth, without apical pits, in 15 or 17 rows. The
ventral scales are rounded. The tail can be either short or rather long. The
subcaudals are paired.[1]
^
abcBoulenger GA (1894). Catalogue of the Snakes in the British Museum (Natural History). Volume II., Containing the Conclusion of the Colubridæ Aglyphæ. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xi + 382 pp. + Plates I-XX. (Genus Atractus, p. 300).
^
abcdBeolens, Bo;
Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp.
ISBN978-1-4214-0135-5. (Atractus bocki, p. 28; A. bocourti, p. 29; A. riveroi, p. 222; A. roulei, p. 227).
Wagler [JG] (1828). "Auszüge aus seinem [sic] Systema Amphibiorum". Isis von Oken21: 740-744. (Atractus, new genus, pp. 741–742). (in German and Latin).