98 bulletin: mcseum of comparative zoology. 



and jet black upper parts it resemViles C. luteola, but otherwise tLe likeness is 

 not very close, and the sjDecies is very strongly characterized. 



TANAGRIDAE. 

 13. Calospiza lavinia (Cassin). 



Three specimens, two males and a leiaale, June 25-27. 



These agree minutely with continental examples, in color and general pro- 

 portions, except that the bill is shorter and relatively broader. This charac- 

 ter, though strongly marked in these three specimens, might fail in a larger 

 series, and we prefer, for the present at least, to allow the Gorgona bird to stand 

 as true C. lavinia. 



14. Tachyphonus delattrii Lafr. 



Xot met with by Mr, Brown. The species is recorded from Gorgona Island 

 by Sclater in Catalogue of Birds in the British Museum, Vol. 11, p. 215, one 

 adult (J having been procured there by Captain Kellett and Lieutenant Wood, 



PRINGILLIDAE. 



15. Sporophila gutturalis (Light.)? 



One adult 9 , July 1. 



This skin comes nearer to the 9 of '5. gutturalis than to females of S. 

 luctuosa and S. collaris (the females of these three species all look much alike), 

 but probal)ly really represents a distinct form, as it is much smaller — shorter 

 wing and tail and smaller feet — and slightly darker in color. Without a male, 

 however, it is impossible to decide just what it really is. Its measurements 

 are as follows: No. 14,015 9; '^ving, 50.5 ; tail, 36.5; tarsus, 13.5; culmen, 7. 



16. Sporophila telasco (Lesson) 1 



One young ^, July 1. 



This specimen seems to be referable to S. tdasco of Peru and Ecuador. 

 At all events, it needs comparison with no other species. We can find no skins 

 of T. telasco in quite corresponding plumage to compare it with, but on the 

 other hand can detect in our specimen no marked differences from the fully 

 adult skins with which it has been compared. Our specimen is immature, the 

 bright chestnut throat patch of the adult plumage being indicated by feathers 

 of this color appearing irregularly over the throat. 



V, PiEPTiLiA AND Amphibia. By Thomas Barbour. 



The Reptiles of Gorgona Island are derived from the adjacent main- 

 land. Many of the species, however, are very distinct from their nearest 

 congeners. 



