. Bulletin - United States National Museum. Science. 15 REPTlLlA: SERPENTES: COLUBRIDAE • * ADELPHICOS ADELPHICQS Jan 1862 Adelph icos Jan, Arch. Zool. Anat. Fis., 2; 18. Type-species: Adelph icos quadr i v irqatum Jan. 1866 Rheqnops Cope, Proc. Acad. Nat. Sci. Phila., 1866: 128. Type-species: Rheqnops v ison i nus Cope. Distribution: Atlantic slopes from central Honduras through British Honduras (apparently not in Yucatan) to central Veracruz; on Pacific slopes from central Guatemala to central Oaxaca; interior valleys of Guatemala and Chiapas. Content: Two species. Key to the species 1. Thir
. Bulletin - United States National Museum. Science. 15 REPTlLlA: SERPENTES: COLUBRIDAE • * ADELPHICOS ADELPHICQS Jan 1862 Adelph icos Jan, Arch. Zool. Anat. Fis., 2; 18. Type-species: Adelph icos quadr i v irqatum Jan. 1866 Rheqnops Cope, Proc. Acad. Nat. Sci. Phila., 1866: 128. Type-species: Rheqnops v ison i nus Cope. Distribution: Atlantic slopes from central Honduras through British Honduras (apparently not in Yucatan) to central Veracruz; on Pacific slopes from central Guatemala to central Oaxaca; interior valleys of Guatemala and Chiapas. Content: Two species. Key to the species 1. Third infralabial nearly as broad as long, sub- equal in size to second; chinshields not greatly expanded toward lip (Fig, l) veraepac i s Third infralabial absent, or greatly reduced in size and confined to labial border; chin- shields greatly expanded toward lip (Figs. 2-3/ quadr i v irga tus Clave de especies Tercera infralabial aproximadamente tan ancha como larga, de tamano subigual a la segunda; escudos mentales no expandidos notablemente hacia el borde labial (Fig. l) veraepac i s Tercera infralabial ausente o muy reducida en tamano y confinada al borde labial; escudos mentales muy expandidos hacia el borde labial (Figs. 2-3) quadr i v i rqatus. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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