ART. 6 SOUTH AMERICAN LIZARDS C. E. AND M. D. BURT 41 



44 segments in an anniilus at the middle of the body, 22 above and 

 22 below ; 227 rings on the body and 30 on the tail. 



Genus ANOPSIBAENA Stejneger 



ANOPSIBAENA KINGII (Bell) 



1833. AtiOps kiitgii Bell, Proc. Zool. Soc. London, p. 99 (type locality. South 

 America ) . 



South America. — One specimen, No. 17550, collected by H. E. 

 Ames. 



Argentina. — One specimen, No. 16619, from Cordova, collected by 

 H. Edwards. 



Genus LEPOSTERNON Spix 



1824. Leposiernon Spix, Spec. Nov. Serp. Brasil.. p. 70. 

 1830. Lepidosternmi Wagleb Syst. Ampli., p. 197. 



LEPOSTERNON BOULENGERI Bocttger 



1885. Lepidosternon boulengeri Boettger, Zeitsclir. f. Naturw., vol. 58, p. 220 

 (type locality, Paraguay). 



In his key (1885), Boulenger says that only the anterior point of 

 the frontal of this lizard is in contact with the rostral, but the three 

 specimens listed below show that it may be rather broadly in contact 

 at times. 



Argentina. — Three specimens, Nos. 73510-12, collected by the 

 Breyer Brothers. 



LEPOSTERNON MICROCEPHALUM Spix 



1824. Leposiern.oii microcephalus Spix, Spec. Nov. Serp. Brasil., p. 70 (type 

 locality, Rio de Janerio, Brazil). 



Brazil. — Five specimens. No. 58737 from the Hurter collection, 

 and Nos. 40221-24 from (Rio Humboldt, Cerro do Mar), Province 

 of Santa Catherina, collected by W. Erhardt. 



LEPOSTERNON POLYSTEGUM Dumeril 



1851. Lepidosternon polystcijum Dumerit., Cat. Meth. Coll. Reptiles, Mus. Paris, 

 p. 149 (type locality, Baliia, Brazil). 



Brazil. — Two specimens, Nos. 58347-48, from Pernambuco, taken 

 in December, 1895, a part of the Hurter collection. 



LEPOSTERNON SCUTIGERUM (Hemprich) 



1820. Aiiiphishaena ifcutigcx' H?:mprich, Verhandl. d. Ges. Naturt'. Freunde 



Berlin, vol. 1. p. 129 (type locality, Brazil). 

 1885. Lepidosternon scutigeruiii Boulenger, Cat. Liz. Brit. Mus., vol. 2, p. 469. 



The liead of this form is tinged with dark brown above and the two 

 chief head plates are very well defined and conspicuous. 



Brasil. — One specimen. No. 5670 from Rio de Janeiro, taken by 

 the United States Exploring Expedition. 



