CHECKLIST OF THE SNAKES OF MEXICO 31 



ADELPHICOS QUADRIVIRGATUS SARGII (Fischer) 



Rhegnops sargii Fischek, Jahrb. Hamburg Wiss. Anst., vol. 2, 1885, pp. 92-93. 

 Adelphicos quadrivirgatus sargii Smith, Proc. Rochester Acad. Sci., vol. 8, 1942, 

 pp. 192-195, figs. 4 (ventral head scales), 6 (map). 



Type. — Three cotj^pes, one in Brit. Mus. Nat. Hist, (lectotype), 

 two in Stuttgart Mus. 



T-i/pe locality. — Guatemala. 



Range. — Foothills on Pacific slopes from southern Chiapas to cen- 

 tral Guatemala (known from only one locality in Mexico: Chicharras, 

 Chiapas). 



ADELPHICOS QUADRIVIRGATUS VISONINUS (Cope) 



Rhegnops visoninus Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 18, 1866, 



pp. 128-129. 

 Adelphicos quadrivirgatus msonintis Smith, Proc. Rochester Acad. Sci., vol. 8, 



1942, pp. 186-188, figs. 2 (ventral head scales) 6 (map). 



Type.— U.S.'N.M. No. 24899. 



Type locality. — HGn(iuras. 



Range. — Foothills on Atlantic slopes from Tabasco south and east 

 to central Honduras, avoiding most if not all the Yucatan Peninsula 

 (known definitely in Mexico from two localities: Palenque, Chiapas, 

 and Tenosique, Tabasco). 



ADELPHICOS VERAEPACIS NIGRILATUS Smith 



Adelphicos veraepacis nigrilatus Smith, Proc. Rochester Acad. Sci., vol. 8, 1942, 

 pp. 182-186, figs. 1 (ventral head scales), 6 (map). 



Type.—E. H. Taylor-H. M. Smith Coll. No. 15335. 



Type locality. — San Cristobal, Chiapas. 



Range, — Central Chiapas (known only from the type locality). 



Genus AMASTRIDIUM Cope 



Amastridiutn Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 12, 1860 (1861), p. 370. — 



Dunn, Proc. U. S. Nat. Mus., vol. 65, art. 11, 1924, pp. 1-3. 

 Mimometopon Werner, Abh. Bayer. Akad. Wiss., vol. 22, 1903, p. 349 (type, 



M. sappcri Werner). 



Genotype. — Amastridium veliferunrv Cope. 

 Range. — Extreme southern Mexico to Panama. 

 Species. — Two; the extralimital species is velifenmi Cope, from 

 Nicaragua, Costa Rica, and Panama. 



AMASTRIDIUM SAPPERI (Werner) 



Mimometopon sapperi Wb^iner, Abh. Bayer. Akad. Wiss., vol. 22, 1903, pp. 349-350. 



Amastridium sapperi Dui^N, Proc. U. S. Nat. Mus., vol. 65, art. 11, 1924, p. 1. — 



Smith, Publ. Field Mus. Nat. Hist., zool. ser., vol. 29, 1944, pp. 130-138. 



Type. — JVIiinchen Mus. 



