320 Mr. P. R. Lowe on Birds collected 
my specimens from Blanquilla. My Testigos birds are, 
however, paler below than those I have obtained in Grenada. 
Two examples in my collection, one shot by me on Margarita 
and the other in Tobago, seem to correspond to M. gilvus 
columbianus. The wings and tails in these birds are notice¬ 
ably much longer than in those under discussion. The 
Tobago Mocking-bird has been distinguished as M. gilvus 
tobagensis. 
C(EREBA LAURiE. 
Coereba laurce Lowe, Bull. B. O. C, vol. xxi. p. 108 (1908). 
Pour males and five females. 
Soon after landing on Testigo Grande 1 was astonished to 
meet with a black form of this genus similar to Coereba 
atrata and C. wellsi from St. Vincent and Grenada ; and I 
quickly became aware that it was quite common and well 
established there, for we soon shot as many specimens 
as we required, and its nests were everywhere in evidence. 
Previous to this discovery, an entirely black form of this 
genus had only been known from the two above-mentioned 
islands, so that the discovery of one here was of some 
interest. I have ventured to separate the Testigos bird 
chiefly on account of the fact that the bright crimson 
and tumid rictus which is so conspicuous an object in the 
St. Vincent and Grenada birds, is in this form entirely 
absent. The bill is also less curved. The fact that the 
tumid rictus is absent in this form cannot, I think, be put 
down to a change at the breeding-season, for in some of the 
examples which 1 shot the sexual organs were enlarged and 
the birds were evidently soon about to breed, although I did 
not find any eggs in several nests I examined. A fortnight 
before I had found the black Coereba in St. Vincent and 
Grenada busily engaged in breeding-operations, and I found 
both young and eggs on Grenada. The brightly coloured 
rictus was then a conspicuous feature. The nest of the 
Testigos bird differs markedly in appearance from that found 
in the other two islands, a large amount of vegetable down 
being interwoven into the outside structure. 
