8 PROCEEDINGS OF THE NATIONAL MUSEUM vol. C7 



35, LYSTROPHIS SEMICINCTA (Dnm€rll and Bibron) 



Heterodon semicinctus Dumeril and Bibron, Erp. G6n., vol. 7, 1854, p. 774 

 Lystrophis semicinctus Boulenger, Cat. Snakes Brit. Mus., vol. 2, 1894, 

 p. 153. 

 Argentina. — 1 specimen, No, 52591, collected in Cerros de Mendoza 

 by C. S, Reed, 



36. UROTHECA ELAPOIDES ELAPOIDES (Cope) 



Pliocercus elapoides Cope, Proc. Acad. Nat. Sci. Philadelphia, 1860, p. 253. 

 Pliocercus euryzonus Cope, Proc. Acad. Nat. Sci. Philadelphia, 1862, p. 72. 

 Urotheca elapoides, U. euryzonus Boulenger, Cat. Snakes Brit. Mus., 

 vol. 2, 1894, p. 182. 



Ecuador. — 1 specimen, No. 32038, collected by F, L. Stuart. 



37. DIMADES PUCATIUS (Linnaeus) 



Coluber plicatilis Linnaeus, Syst, Nat., ed. 10, 1758, p. 217. 

 Dimades plicatilis Gray, Zool, Misc., 1842, p. 65. — Boulenger, Cat. 

 Snakes, Brit. Mus., vol. 2, 1894, p. 186. 



Paraguay, — 1 specimen, No. 12,400, collected by the Paraguay 



Expedition. 



38. HYDROPS TRIANGULARIS (Wagler) 



Flaps triangularis Wagler, in Spix, Species Novae Serp. Brasil, 1824, p. 5, 



pi, 2a, fig. 1. 

 Hydrops triangularis Boulenger, Cat. Snakes Brit. Mus., vol. 2, 1894, p. 



187, 



Dutch Guiana. — 1 specimen, No. 11,150, collected by C. J, Hering. 

 Brazil. — 1 specimen. No. 6,009, collected in the Amazon Valley 

 by Lieutenant Herndon, 



39, LAMPROPELTIS MICROPHOLIS Cope 



Lampropeltis micropliolis Cope, Proc. Acad. Nat. Sci. Philadelphia, 1860, 

 p. 257.— Blanchard, U. S. Nat. Mus., Bull. 114, 1921, p. 149. 



Coronella micropholis Boulenger, Cat. Snakes Brit. Mus., vol. 2, 1894, p, 

 203. 



Ecuador. — 6 specimens, Nos, 62,809-14, collected by F. W. God- 



ing. 



These specimens show all the variations in coloration referred to 

 by Blanchard (p. 150). 



40, ATRACTUS ROULEI Despaz 



Atractus roulei Despax, Bull. Mus. Hist. Nat. Paris, 1910, p. 30. 



Ecuador, — 2 specimens, Nos, 33,861-2, collected in the Alausi 

 Valley by Mr, Davis: 



