Fig. 19 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters

Fig. 19. Everted hemipenis of Xenodon rabdocephalus, sensu lato, in sulcate view. Right organ of AMNH R-81935, manually everted (terminus of right lobe burst), from central Panama. Inset: Greatly enlarged terminus of left lobe, showing nude tip lacking an apical disc. The name Xenodon angustirostris W. Peters, 1864, is resurrected herein for populations of X. ''rabdocephalus'' characterized by this kind of hemipenis (compare hemipenis with apical disc in fig. 18).