Fig. 26 in New Taxa And Cryptic Species Of Neotropical Snakes (Xenodontinae), With Commentary On Hemipenes As Generic And Specific Characters

Fig. 26. Two small Panamanian snakes, genus Enulius— anatomically similar and apparently closely related—but recently separated generically on the basis of what appears to be extreme variation in the hemipenes (see text and fig. 27). A. Enulius flavitorques (Cope), with a yellow nape band (AMNH R- 109600, Canal Zone, Ancon). B. ''Enuliophis'' sclateri (Boulenger), with an enamel white head (KU 112619, San Blas, Camp Sasardí. Both photographed larger than life by C.W. Myers).