Fig. 1 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters

Fig. 1. Eutrachelophis bassleri, new species. Dorsal and ventral views of adult specimens: A. AMNH R- 52926 (male holotype), from upper Río Pisqui, Peru. B. AMNH R-53473 (female paratype), from upper Río Utuquinia, Peru, near border with Brazil. The conspicuous nuchal markings are ''cream'' or ''yellow'' in life. Specimens shown life size.