98 bulletin: museum of comparative zoology. and jet black upper parts it resembles C. Udeola, but otherwise the likeness is not very close, and the species is very strongly characterized. TANAGRIDAE. 13. Calospiza lavinia (Cassin). Three specimens, two males and a female, 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. lavmia. 14. Tachyphonus delattrii Lafe. Not 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. FRINGILLIDAE. 15. Sporophila gutturalis (Licht.)? One adult 9 , July 1. This skin comes nearer to the 9 of S. gutturalis than to_ females of S. luctuosa andiS. collaris (the females of these three species all look much alike), but probaljly 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) wing, 50.5 ; tail, 36.55 tarsus, 13.5; culmen, 7. 16. Sporophila telasco (Lessok)? One young $, Jwly 1-This specimen seems to be referable to S. telasco 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 Ijeing indicated by feathers of this color appearing irregularly over the throat. V. Eeptilia 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.
BioStor
