316 bulletin: museum of comparative zoology. 



Dendroica vitellina vitellina Cory. 



Ten specimens, both sexes, all adult. Grand Cayman, April and May. 



This fine island form confined to Grand Cayman, was in Brown's 

 experience a very uncommon bird and he told me that it was with 

 difficulty that he got even the ten noted above. 



Dendroica vitellina crawfordi Nicoll. 



Thirty-seven specimens, both sexes, adults and young, Little Cay- 

 man and Cayman Brae, June and July. 



This is a well-marked subspecies whose characters were accurately 

 noted by Nicoll, (Bull. B. O. C, 1904, 14, p. 95) who also figured it 

 (Ibis, 1904, ser. 8, 4, pi. 11, f. 1). 



It is an abundant bird in the two smaller islands, and is quite the 

 same in both. 



Coerebidae. 



* COEREBA SHARPEI (Cory). 



Twenty-eight specimens, both sexes, all adult, Grand Cayman, 

 Little Cayman, and Cayman Brae, April, May, June, and July. 



Brown's specimens from Grand Cayman are unfortunately not 

 comparable with his series from Little Cayman and Cayman Brae, 

 and I am unable to say whether the differences shown by birds from 

 the two smaller islands, when compared with examples from Grand 

 Cayman, are seasonal or not. I am inclined, however, to regard these 

 differences as only seasonal. The Grand Cayman birds, all taken in 

 April and May, were in worn and somewhat faded breeding plumage, 

 while those from Little Cayman and Cayman Brae, taken in late 

 June and July, had completed or were just completing the post- 

 nuptial moult, and were therefore all in what might be called fresh 

 autumnal plumage. The upper parts in the Grand Cayman specimens 

 are dull brownish black; the yellow of the under parts is pale and dull. 

 The upper parts in the Little Cayman and Cayman Brae skins are 

 grayish black with a slight olivaceous cast; the yellow of the under 

 parts is richer and rather more orange. Brown noted that the " skin 

 at corners of mouth, red" in the Grand Cayman bird; " skin at corners 

 of mouth, flesh-color" in Little Cayman and Cayman Brae specimens. 

 This possibly also has to do with the breeding season. 



