5, TEOGON. 



455 



Adult, male. Differs from the adult male of T. jmella in having 

 the breast, belly, and under tail-coverts orange instead of blood-red. 



An adult male from Barranca, Costa Rica, has the breast and 

 underparts orange-red, exactly intermediate in colour between 

 T. piiella and T. auranteiventris. 



Adult female. Differs from the adult female of T. puella only 

 in having the breast, belly, and under tail-coverts orange. 



The younri differ from the adults in the same way as the young of 

 T. jniella. 



Hah. Ranging from Guatemala to Yeragua. 



It is very doubtful if this species is really distinct from T. puella 

 or merely a colour-variety, 



Choctum, Vera Paz, Guatemala, Salvin-Godman Coll. 



Jan. (Salvin). 

 Barranca, Costa Rica, April Salvin-Godmau Coll. 



{Ca)-7niol). 

 Cliiriqui (Arce). 

 Chiriqui. 



«. 2 imm. sk. 



b. (S ad. sk.* 



c. (^ ad. sk. 

 d,e. c? 9 ad. sk. 



f-i. d ? ad. et 



imm. sk. 

 k. 5 near. ad. sk. 

 /, m. S 2 ad. sk. 

 n, 0. c? 2 ad. & 



nearly ad. sk. 



Calovevora, Veragua (A?-ce). 



Santa F6 (Arce). 

 Cordillera de To\6 (ArcS). 

 Veragua (Arci). 



Salvin-Godman Coll. 

 Gould Coll. 

 (Types of the species.) 

 Salvin-Godman Coll. 



Salvin-Godman Coll. 

 Salvin-Godman Coll. 

 Sclater Coll. 



8, Trogon atricollis. 



A number of names have been given to specimens of this species 

 from different parts of its wide range, which extends from Nicaragua to 

 Rio Grande do Sul wherever there is forest. In comparing specimens 

 from these two localities numerous differences at once present them- 

 selves : in specimens from Central America {T. tenellus) the middle 

 pair of tail-feathers are green glossed with peacock-blue, the bars on 

 the three outer pairs of tail-feathers are wider and less numerous, 

 and the breast and underparts are yeUow unmixed with orange ; 

 the specimens from South Brazil (T. chrysocJdorus) are rather larger, 

 the middle pair of their tail-feathers are green glossed with bronze, 

 the bars on the three outer pairs of tail-feathers are narrower and 

 more numerous, and the breast and underparts are orange-yellow ; 

 but these differences are more or less bridged over by specimens from 

 Guiana (T. atricollis), U.S.Colombia, Ecuador, and other intermediate 

 localities. The only characters which appear to be of any importance 

 to distinguish Central-American from all South- American specimens 

 are the colour of the middle pair of tail-feathers coupled with that of 

 the breast and underparts, though it must be added that in a single 

 specimen, labelled " Demerara, Gould Coll.," the centre pair of tail- 

 feathers have a distinct inclination to the peacock-blue shade of 

 T. tenellus, while the breast is orange-yellow as in other South- 

 American specimens (T. atricollis and T. chrysocJdorus). It is 



* luterruediale between T. auranteiventris and T. fucUa. 



