Snakes of the genus Arrhyton share the following characters. The maxillary bone is short, with eight small teeth, which are followed, after a large interspace by a strongly enlarged fang. The mandibular teeth are small and equal. The head is slightly distinct from the neck. The eye is rather small, with a round pupil. The body is cylindrical in cross-section. The dorsal scales are smooth, without apical pits, and are arranged in 15 or 17 rows. The ventrals are rounded. The tail is moderately long. The subcaudals are in two rows.[3]: 251
^Boulenger, 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). pp. xi, 1–382 + Plates I–XX.
Günther A (1858). Catalogue of Colubrine Snakes in the Collection of the British Museum. London: Trustees of the British Museum. (Taylor and Francis, printers). xvi + 281 pp. (Arrhyton, new genus, p. 240, 244).
Schwartz A, Thomas R (1975). A Check-list of West Indian Amphibians and Reptiles. Carnegie Museum of Natural History Special Publication No. 1. Pittsburgh, Pennsylvania: Carnegie Museum of Natural History. 216 pp. (Arrhyton dolichurum, p. 177; A. taeniatum, p. 178; A. vittatum, pp. 178–179).
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