784 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
1893, 513 (Rio Escondido, Nicaragua; coll. U.S. Nat. Mus.; = abnormally 
colored adult male?).—Satvin and Gopman, Biol. Centr.-Am., Aves, ii, 
1896, 501. 
[Trogon] chrysomelas Suarpe, Hand-list, ii, 1900, 149. 
Genus CHRYSOTROGON Ridgway. 
Microtrogon (not of Bertoni, 1901 5) Gorxpr, Bol. Mus. Goeldi, v, no. 1, Feb., 
1908, 92, 98, 94, 95. (Type, Trogon ramoniana Deville and Des Murs.).— 
SneTHLaGE, Bol. Mus. Goeldi, v, no. 1, Feb., 1908, 62, in text.¢ 
Small Trogons, resembling Trogonurus, but differing in having the 
tarsus densely feathered to base of toes, tail relatively shorter, and 
nestling resembling adults in coloration. 
Bill stout, its depth at nostrils equal to its width at same point, the 
culmen strongly arched, indistinctly ridged; gonys about as long as 
mandibular rami, slightly to moderately convex, strongly ascending 
terminally; interramal space broader at base than long; tomia dis- 
tinctly serrate, especially on mandible, the tip of which forms a short 
ascending point. Nostril roundish, margined above and behind by 
membrane, mostly concealed by strong, antrorse, decurved latero- 
frontal bristles. Eyelids naked, forming a rather broad orbital ring. 
Feathers of malar apex and chin bristly, antrorse, the latter strongly 
recurved; seventh and sixth primaries longest, the eighth a little 
shorter, the tenth (outermost) about half as long as ninth; tail about 
as long as wing (sometimes shorter), graduated for a little more than 
one-third its length, the rectrices truncate (the lateral ones obliquely 
so) at tip, the outermost moderately bowed basally. Tarsus about 
portion of inner web of outermost rectrix and basal half or more of inner web of next 
two; middle and greater wing-coverts and secondaries delicately vermiculated with 
black and white; rest of wing slate-blackish, the longer primaries edged with white; 
under parts, posterior to chest, rich, pure orange-yellow (between lemon and cadmium, 
but nearer to latter), margined anteriorly by a band of white across upper breast (next 
to sooty color of chest), the feathers of tibia and upper portion of tarsus sooty black, 
tipped with yellowish white; bill (in dried skin) grayish horn color, with tomia and 
terminal half of culmen dull yellowish; feet horn color, in dried skin; length (skin), 
238; wing, 110.5; tail, 140; culmen, 17; tarsus, 13; inner anterior toe, 14. (No. 
127338, coll. U. 8. Nat. Mus., Rio Escondido, Nicaragua, September 23, 1892; Charles 
W. Richmond.) 
This bird agrees so perfectly in measurements, pattern of coloration of lateral rec- 
trices, and color of under parts (posterior to the chest), that, in spite of the utter absence 
of metallic coloring, I am now disposed to consider it an abnormal adult male of T. 
curucui tenellus. The adult female described by Dr. Richmond as that of T. chry- 
somelas is unquestionably referable to Chrysotrogon caligatus. 
@New genus. Type, Trogon caligatus Gould. From yovotc, gold+ Trogon (zpwyt, 
I gnaw, I eat). 
b Aves Nueves del Paraguay, 1901, 41. (Type, M. fulvescens Bertoni=Bucco [Non- 
nula] rubecula Spix. 
¢ Has anteriority over publication of same name by Goeldi, but not intended as new. 
