784 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



1893, 513 (Rio Escondido, Nicaragua; coll. U. S. Nat. Miis.; = abnormally 

 colored adult male?). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 

 1896, 501. 

 [Trogon] chrysomelas Sharpe, Hand-list, ii, 1900, 149. 



Genus CHRYSOTROGON Ridgway.a 



Microtrogon (not of Bertoni, 1901 &) Goeldi, Bol. Mus. Goeldi, v, no. 1, Feb., 

 1908, 92, 93, 94, 95. (Type, Trogon ramoniana Deville and Des Murs.). — 

 Snethlage, Bol. Mus. Goeldi, v, no. 1, Feb., 1908, 62, in text.c 



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. S. 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. 



a New genus. Type, Trogon caligatus Gould. From /lOyaof, go\d+Trogon (zpdijxit, 

 I gnaw, I eat). 



b Aves Nueves del Paraguay, 1901, 41. (Type, M. fulvescens Bertoni =Bw.pco [Nan- 

 nula] rubecula Spix. 



c Has anteriority over publication of same name by Goeldi, but not intended as new. 



