Blanquilla Island, Venezuela. 119 
two examples from Margarita Island and those from the 
mainland in being decidedly lighter in colour above and 
below. The pileum is also paler brown, and a rather 
noticeable grey nuchal collar is present in the Blanquilla 
bird, which does not exist in the others. 
6. Minus eGitvus. 
Mimus gilvus rostratus Ridgway, Proc. U.S. Nat. Mus. 
1884, p.173 (Curacao) ; Berl. J. f. O. 1892, p. 74 (Curacao) ; 
Hartert, Ibis, 1893, p. 294. 
In comparison with a series from St. Vincent, Grenada, 
and the Grenadines, my six specimens from Blanquilla are 
distinctly paler above. There is a strong ashy tint over the 
breast in the Blanquilla bird, contrasting in this respect 
with the paler colour of the lower parts in the St. Vincent 
and Grenada birds. ‘There is also some fairly well-marked 
streaking on the flanks of the Blanquilla birds, but not more 
so than in some of the specimens labelled M. gilvus in the 
British Museum. 
The irides of the Blanquilla birds vary from almost chrome- 
yellow to pinkish hazel; the females usually have yellowish 
irides, the males pink. The females generally have the head 
much wider in appearance than the males, and I could as 
a rule prognose the sex by this sign before dissection, and the 
colour of the iris settled the point. 
If there is any difference at all, the Blanquilla bird would 
appear to be intermediate between ordinary forms of M. gilvus 
and M. rostratus. 
This Mocking-bird was not breeding at the time of our 
visit. 
7. DenDR@CA RUFO-PILEATA. 
Dendreca rufopileata Ridgw. Proc. U.S. Nat. Mus. vii. 
1884, p. 173; Berl. J. f.O0.1892, p. 76 (Curacao) ; Hartert, 
Ibis, 1893, vol. v. p. 311. 
I have compared a dozen specimens of the bird from 
Blanquilla with a series from Curacao, Aruba, and Bonaire, 
which Dr. Hartert has kindly sent me for examination, 
