MOMOTUS. 277 



times minutely and indistinctly freckled with grayish ; inner web 

 chiefly plain dusky grayish, with white tip and dusky subtei'minal 

 bar. Length about 10.50-11.50, wing 5.10-5.50, tail 5.50-6.50. Sab. 

 Central America, south to Veragua, north to tieri'a caliente of eastern 

 Mexico (Vera Cruz). 



T. puella Gould. Xalapa Trogon.^ 

 rt". Lower parts yellow ; females slate-color or plumbeous above. 



h^. 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 Eica. 



T. melanocephalus Gould. Black-headed Trogon.^ 

 6^ 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.^ 



Family MOMOTID^E.— The Motmots. (Page 271.) 



Genera. 

 (Characters same as those given for the Family) ... Momotus. (Page 277.) 

 Genus MOMOTUS Brisson.* (Page 277, pi. LXXXL, fig. 2.) 



Species. 



Common Characters. — General color plain greenish, tinged more or less with 

 olive ; rather lengthened and stiffened ear-coverts chiefly black, but partly blue ; a 

 naiTOw tuft of rather lengthened and somewhat stiff'ened 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 Goold, P. Z. S. 1845, 18. 



* Trogon melanocephalus Gould, Mon. Trog. 1838, pi. 12. 

 3 Trogon citreolus GouLD, P. Z. S. 1835, 30. 



* Momotua Bbiss., Cm. iv. 1760, 465. Type, Ramphaetos momota Linn. 



