Xenodon Boie, 1826

Luna, Igor Veronese de, Ugalde, Miguel Relvas, Guimarães, Mariana Rocha Santos, Hoffmann, Kauann, Citeli, Nathalie, Kiefer, Mara Cintia & Hamdan, Breno, 2025, Fig. 3 in Positive association between PTN polymorphisms and schizophrenia in Northeast Chinese Han population., Zoological Studies 64 (20), pp. 141-149 : 9

Xenodon Boie, 1826

1. Dorsal scales in 21 rows; often 8 supralabial scales ..................... .................................................... Xenodon neuwiedii ( Fig. 27f–g )

- Dorsal scales in 19 rows; often 7 supralabial scales (sometimes eight) ........................................... Xenodon merremii ( Fig. 27d–e )

Figures

Fig. 27. Representative Dipsadidae Snakes of Rio de Janeiro: a, Tomodon dorsatus from São Paulo/SP; b, Tropidodryas serra from Barra do Piraí/ RJ; c, Tropidodryas striaticeps from Rio de Janeiro State; d, Xenodon merremii with brown blotches from Rio de Janeiro State; e, Xenodon merremii with black blotches from Três Rios/RJ; f, Xenodon neuwiedii juvenile from Mangaratiba/RJ; g, Xenodon neuwiedii adult from Nova Friburgo/RJ; h, Xenopholis scalaris from Magé/RJ. RJ = Rio de Janeiro, SP = São Paulo. Photos by Breno Hamdan (c, d, e, g, h), Edson Taciano (b), Igor Veronese de Luna (a, f)