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186 TROGONIDH, TROGONS ; MOMOTIDA, SAWBILLS.—GEN. 124, 125. 
124. Genus AGYRTRIA Cabanis. 
Linné Hummingbird. 8 bronzy-green, including middle tail feathers ; 
throat and breast grass-green, paler on sides; middle of belly, and crissum, 
white; wings purplish-brown; lateral tail feathers black with paler tips; 
@ duller, more white below, no green on throat; wing 2; tail 14; bill 3. 
South America; accidental in Massachusetts, one instance (Aug. 1865, 
Brewster) ; but I am advised that the occurrence is open to suspicion. 
ALLEN, Am. Nat. iii, 1869, p. 645; Maynarp, Guide, 128. . Linna. + 
Suborder CUCULT. COuculiform Birds. 
The nature of this large group has been indicated on a preceding page (178). 
Family TROGONID. Trogons. 
Feet zygodactyle by reversion of the second toe. The base of the short, broad, 
dentate bill is hidden by appressed antrorse feathers; the wings are short and 
rounded, with faleate quills; the tail is long, of twelve broad feathers; the feet 
are very small and weak. The general plumage is soft and lax, the skin tender, 
the eyelids lashed. <A well-marked family of about fifty species and perhaps a 
dozen genera, chiefly inhabiting tropical America. ‘They are of gorgeous colors, 
and among them are found the most magnificent birds of 
this continent. 
125. Genus TROGON Auctorum, 
Mexican Trogon. Metallic golden-green; face and 
sides of head black; below from the breast carmine ; 
a white collar on the throat; middle tail feathers 
coppery-green, the outer white, barred with black ; 
Fig. 120, Mexican Trogon. quills edged with white; about 11; wing 54; tail 62. 
Valley of the Rio Grande, southward. Bop., 69, pl. 40. . . MeExicaNnus? 
Family MOMOTIDA. Sawbills. 
Feet syndactyle by cohesion of third and fourth toes; tomia serrate. A very small 
family of tropical American birds, 
comprising about fifteen species. 
Neither this nor the foregoing has 
really rightful place here, but they 
come on our border, and are in- 
cluded to illustrate the suborder. 
Tn the following species, the central 
tail feathers are long-exserted, and 
spatulate by absence of webs along 
a part of the shaft—a mutilation 
effected, it is said, by the birds 
themselves; the bill is about as 
long as: the head, gently curved ; 
the nostrils are rounded, basal, exposed; the wings are short and rounded; the 
tarsi are scutellate anteriorly. 
Fig. 121. Blue-headed Sawhbill. 
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