ART. 6 SOUTH AMERICAN LIZARDS C. E. AND M. D. BURT 25 



TROPIDURUS OCCIPITALIS BOCOURTII (Boulcnger) 



1874. Aucuporus occipitalis Bocourt, Miss. Sci. IMexique Amer. Centr., p. 215, 



pi. 18, fig. 1 (type locality, Peru). 

 1885. Tropidurus hocourtil Boulengek, Cat. L'z. Brit. Mus., vol. 2, p. 173, 



[new name for Tropidurus occipitalis (Bocourt, 1874), preoccupied 



by Tropidurus occipitalis (Peters, 1871)]. 



Peru. — Three specimens, Nos. 75962-64, collected at Bellavista 

 by G. K. Noble. 



TROPIDURUS OCCIPITALIS OCCIPITALIS (Peters) 



1872. Tropidurus (Lacmopristus) occipitalis Peters, Mouatsber. Berlin Akad. 

 Wiss. (1871), p. 645 (type locality, Peru). 



Ecuador. — One specimen, No. 75965, Posorja, Gulf of Guayaquil, 

 collected by G. Baur. 



TROPIDURUS PACIFICUS Steindachner 



1876. Tropidurus {Craniopeltis) jmcificus Steindachner, Festschrift Zool.-Bot. 



Ges. Wien, p. 313, pi. 2, fig. 3 (type locality, Inilefatigable ? and Blindloe 



Islands, Galapagos Archipelago). 

 1890. Tropidurus abingdonii Baur, Biol. Centralbl., vol. 10, p. 479 (type locality, 



Abingdon Island, Galapagos). 



Abingdon Island, Galapagos Archipelago. — Thirty-seven speci- 

 mens, Nos. 14966-98 and 15001, co-types of T. abingdonii Baur, and 

 the type No. 14965, both lots secured on April 16, 1888, by the United 

 States Fish Commission steamer Albatross, and Nos. 58387-88 from 

 the Hurter collection, taken September 22, 1906. 



TROPIDURUS PERUVIANUS (Lesson) 



1826. Stellio perunianus Lesson, in Dupeeey, Voy. " Coqviille," Zool. Atlas, 

 Reptiles, pi. 2, fig. 2 (photograph) ; Voy. " Coquille," Zool. Text, vol. 2, 

 pt. 1, 1831, p. 40 (type locality, "Par la mer au pied de Callao, et sur 

 la cote nue et dessechee de Payta," western coast of Peru). 



1885. Tropidurus peruvianus Boulenger, Cat. Liz. Brit. Mus., vol. 2, p. 174. 



1900. Tropidurus thoniasi Boulenger, Ann. Mag. Nat. Hist., ser. 7, vol. 6, p. 



184 (type locality, Eten, coast of Peru). 



1901. Tropidurus theresiae Steindachner, Anz. Akad. Wiss. Wien, vol. 88, p> 



195 (type locality, Ancon, near Lima, Peru). 



The specimens listed on page 26 have been carefully compared, and, 

 on the basis of their variations, it is impossible to recognize Tropi- 

 dwus thoniasi Boulenger (1900) as a distinct taxonomic unit. In 

 addition, a topotype of T. theresiae Steindachner (1901, U.S.N.M. 

 No. 13980, shows it to be likewise synonymous with the present 

 species. 



2609—30 4 



