12 PROCEEDINGS OF THE NATIONAL MUSEUM vol.78 



LEIOCEPHALUS CADUCUS (Cope) 



1862. Scartiscus caducus Cope, Proc. Acad. Nat. Sci. Philadelphia, p. 182 (type 



locality, Paraguay ).^ — Boulengek, Cat. Liz. Brit. INIus.. vol. li. 1885, 



p. 127. 

 1890. Liocephalits boliviuinis Boiilenger, Proc. Zool. See. London, p. 82 (type 



locality, Bolivia). — Pebacca, Boll. Mus. Zool. Univ. Torino, vol. 12, No. 



274, 1897, p. 5. 

 1894. Liocephalus caducus Boulengek. Ann. Mag. Nat. Hi.'^t.. ser. 6, vol. 13. p. 



342. 



Boulenger (181)4) is folloAved in regarding the genus Scartiscus 

 as identical with Leiocephalus^ and also in considering his Lio- 

 ce}fhalus holivianus as a synonym of LelocephoJus cafhiciis, the type 

 species of Scartiscus. 



An examination of the type of this species (U.S.N.M. Xo. 5852, 

 collected in Paraguay by Captain Page) shows that the caudals 

 have indistinct verticils of the same general type as those found in 

 Leiocephalus. Posteriori^' an indication of a weak lateral crest is 

 present on each side. Still less of an indication of this crest is 

 found in the related form, Z. lineoguJaris, as shown by the exami- 

 nation of the topotype in the collection of the American Museum of 

 Natural History (No. 23154). 



Besides the type, the United States National Museum has a topo- 

 type from Paraguay, No. 69874, collected in the Chaco by F. 

 Felippone. 



LEIOCEPHALUS IRIDESCENS IRmESCENS (Giinthcr) 



1S51). Liocciihalus iridcscen-s Guivthek, Proc. Zool. Soc. London, p. 409 (type 

 locality, Andes of western Ecuador). 



Ecmitdor. — Five specimens, No. 14058, taken on December 18, 1884, 

 by W. H. Jones, Nos. 12275 (2 specimens) and 12281 from Guayaquil, 

 and No. 61755, collected by J. N. Eose at Huigra in 1918. 



LEIOCEPHALUS OEKATUS ORNATUS («ray) 



1845. Lcioce<phalus ornatus Gray, Cat. Liz. Brit. Mu.^., p. 219 (tyi* locality, 

 Guayaquil, Tropical America). 



PJcnador. — One specimen, No. 33850, from the Alausi Valley, 8,500 

 feet elevation, secured by S. A. Davis. 



LEIOCEPHALUS ORNATUS TRACHYCEPHALUS (Dumeril) 



1851. Holotropis irachyccphalus A. DuMKi;ri., Cat. Metli. Coll. Reptiles, Paris, 

 p. 70 (type locality, Nouvelle Grenade, et en par-particulier Santa-Fe 

 de Bogota). 



1885. Liocephalus truchijcepkahis Boulenger, Cat. Liz. P.rit. Mus., vol. 2, p. 169. 



Colombia. — One topotype., No. 75958, from Bogotii, collected by 

 Hno. Apolinar Maria in 1920. 



