224 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 



which it greatly resembles in color, by its smaller size ; and from T. olivacea 

 pusilla of Mexico by the adult male having the crown and auriculars olive, not 

 black. 



81. Sporophila minuta minuta (Linne). 

 Eight specimens, adults of both sexes, and one young male, May 2 to 19. 



82. Sporophila gutturalis (Light.). 



One adult ^, ^lay 2. 



83. Sporophila aurita (Bp.). 



Xine adults, both sexes, May 2 to 24. 



84. Oryzoborus funereus Scl. 

 Nine specimens, adults of both sexes, and two young males. May 3 to 22. 



85. Saltator magnoides intermedius (Lawr.). 



Eight adults, Ijoth sexes, May 4 to 23. 



86. Saltator albiooUis isthmicus (Scl.). 



Nine adults, both sexes. May 6 to 22. 



IV. Reptilia axd Amphibia. By Thomas Barbour. 



A considerable number of reptiles and amphibians were taken by 

 Mr. Brown on San Miguel and Saboga Islands. He collected also in 

 the vicinity of the city of Panama, and the specimens obtained in all of 

 these localities are included in this paper. The fauna of the islands is 

 not fundamentally diflferent from that of the mainland, whence all the 

 species on the islands appear to have been derived. A few dififerentiated 

 forms are, however, recognizable. 



GECKONIDAE. 

 1. Gonatodes caudiscutatus (Gunther). 



Distribution. — Panama, Colombia, and Ecuador. 



Of this common species there are sixty-five examples from San Miguel Island 

 and eleven from Saboga Island. 



2. Gonatodes fuscus (Hallowell). 



Distribution. — Colombia and Central America. 



This species is represented by twenty-three examples from San Miguel Island 

 and fifteen from Saboga Island. 



