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BLACK-CAPPED HUMMING-BIRD. 
Trochilus polytmus Linnaeus. 
PlATE XXI. 
Long-tailed Black-capped Humming-Bird, Edwards, pi. 
xxxiv — Black.cjipped Humming-Bird, Latham, General 
History, iv. p. 29G. — L'Oiseau-mouche a tMe noire, Or- 
nismj’a cephalatra. Lesson, HisloireNaturelle des Oiseaux- 
mouches, pi. xvii. 
In' the four birds figured upon the next Plates, tvo 
see a very remarkable development of tail, in three 
instances confined chiefly to the lateral feathers, in 
the other, to those of the centre. The three first 
remind us strongly of the forms assumed in the 
Drongo Shrikes, and many of the Muscicapidae. 
The Black capped Humming-bird is in length nine 
inches, of which the long feathers in the tail are alone 
six. The bill is of a fine straw-yellow black at the 
tip ; the feet and legs are of the same colour. The 
feathers forming the black part of the head are of a 
loose and silky texture, considerably lengthened, and 
make a deep black crest. The upper parts, breast 
and belly, are of a rich golden-green, and the gorget 
of scaly feathers covering the whole of the throat 
and foreparts of the neck, is of the most brilliant 
emerald green. The colour of the wings are a dark 
