48 BREWSTER AND BANGS—A NEW AITHURUS [P-N-E.Z-C. 
shining, coppery green; the under parts are luminous yellowish 
green; the wing averages, in the adult male, 66.03 mm., in the 
adult female, 57.69 mm. 
The new bird has a shorter, very 
slender, wholly black bill; the back is 
shining, dark, grass-green, without 
coppery tinge; the under parts are 
luminous, dark, emerald-green; the 
wing averages, in the adult male, 62.95 
mm., in the adult female, 54.18 mm. 
f 
A.—A ithurus polytmus, NO. 37,454, 
ad., Kingston, Jamaica. 
B.—Aithurus scitulus, ype, dad. When adult males, young “malesvor 
females, are compared, and are wholly 
constant throughout the entire series of one hundred and forty- 
four specimens. 
All these differences show equally well 
While Azthurus has quite an array of synonyms, all the names 
apply to the large, yellow-billed, light green species from the south 
side of the island, and the small, black-billed, dark green bird of 
the northeast coast is unnamed. 
The synonymy appears to be as follows: 
1758. TZrochilus polytmus Linn., S. N., ed. 10, p. 120, based chiefly on the 
Long-tail’d Black-cap Humming Bird of Edwards, plate 34. This is an 
excellent figure of the yellow-billed species. 
1758. TZrochilus forficatus Linn., S. N., ed. 10, p. 120, has been used by Heine 
(J. f. Orn., Vol. II, p. 205, 1863) for the yellow-billed species. The name 
was, however, chiefly based on Edwards’ plate 33, which, though wrongly 
attributed to Jamaica, and inaccurate in some details, appears to have been 
taken from the bird which Hartert (in Trochilide) now calls Cyanolesbia 
cyanura (Steph.), and further discussion of the question does not belong 
here. 
1832. TZrochilus cephalatra Less., Ind. Gén. Troch., p. xvi (Ornzsmya cephala- 
tra Less., Hist. Nat. Ois.-Mouches, pp. xviii, 78, pl. 17) is a pure synonym 
of 7. polytmus Linn. 
1849. TZrochilus maria Gosse, Ann. & Mag. N. H., Vol. III, p. 258, from the 
mountains of Manchester, Jamaica. This seems to bea slightly peculiar 
young male of the yellow-billed species. The bill, described from a dried 
specimen, was characterized as “ blackish brown above, buff below, tip black,” 
which is the way it appears in many skins of quite young male birds of the 
yellow-billed species. 
1869. Aithurus fuliginosus Hill (afud Gray, Hand List, Vol. I, p. 134) is a 
nomen nudum. 
