MOMOTUS. 277 
times minutely and indistinctly freckled with grayish; inner web 
chiefly plain dusky grayish, with white tip and dusky subterminal 
bar. Length about 10.50-11.50, wing 5.10-5.50, tail 5.50-6.50. Hab. 
Central America, south to Veragua, north to tierra caliente of eastern 
Mexico (Vera Cruz). 
T. puella GouLp. Xalapa Trogon.! 
a’, Under parts yellow; females slate-color or plumbeous above. 
b'. Outer web of outer tail-feathers uniform black, except broad and abrupt 
white tip. Adult male: Head, neck, and chest dull black; back, scapu- 
lars, and middle tail-feathers metallic green ; rump and upper tail-coverts 
metallic blue, sometimes inclining to violet. Adult female: Head, neck, 
chest, and entire upper parts uniform deep slate. Length about 11.00, 
wing 5.50-5.75, tail 5.80-6.00. Hab. Central America, north to Yucatan, 
south to Costa Rica. 
T. melanocephalus GouLp. Black-headed Trogon.? 
b?. Outer web of outer tail-feather white, except at base. Adult male: Head, 
neck, and chest slate-gray or plumbeous, glossed (except anteriorly) 
with metallic green; back and scapulars bright metallic green, tinged 
with golden ; rump and upper tail-coverts metallic greenish blue; middle 
tail-feathers metallic green. Adult female: Head, neck, chest, and entire 
upper parts uniform slate-gray. Length about 10.00-12.00, wing 5.40- 
5.70, tail about 6.00. Hab. Southwestern Mexico, north to Mazatlan. 
T. citreolus GouLD. Citreoline Trogon.’ 
Famity MOMOTIDA.—Tue Mortwots. (Page 271.) 
Genera. 
(Characters same as those given for the Family)... Momotus. (Page 277.) 
Genus MOMOTUS Bnrisson.* (Page 277, pl. LXXXL, fig. 2.) 
Species. 
Common CHaractEers.—General color plain greenish, tinged more or less with 
olive; rather lengthened and stiffened ear-coverts chiefly black, but partly blue; a 
narrow tuft of rather lengthened and somewhat stiffened black feathers (sometimes 
edged with blue) in middle of chest; lengthened and (usually) spatulate middle 
tail-feathers verditer-blue toward ends, their tips black. 
a’. Top of head bright blue or green, encircled with deep black ; lores deep black ; 
lower parts, including flanks, anal region, and under tail-coverts, olive-green- 
1 Trogon puella Gouxp, P. Z. 8. 1845, 18, 
2 Trogon melanocephalus GouLD, Mon. Trog. 1838, pl. 12. 
8 Trogon citreolus Gout, P, Z. 8. 1835, 30. 
4 Momotus Briss., Orn. iv. 1760, 465. Type, Ramphastos momota Linn. 
