TORYOTIIORUS. 



121 



The characters of these two divisions will bo found detailed in 

 tho introductory remarks, and under their respective heads. Tro<il<h- 

 (hjtcx, with its two sections, is very closely related to T/iryothoruH, 

 as restricted, so much so that it is very difficult to draw the line. 

 The supposed differences referred to by many authors resulted from 

 the comparison of Troglodyten with Thryophilue, rather than with 

 true ThryothoriiH. 



In the following synopsis I present an artificial key to the species 

 of Thryothorus, Pheugopedius, and Thryophilus, l^und in North 

 aiul Middle America, with their nearest South American allies, and 

 based entirely on color and markings. T. 2)leuro)ilictus I know only 

 by description, and may not have worked it in properly. A more 

 natural arrangement, based upon the peculiarities of structure, fol- 

 lows the first 



Synopsis of Species. 



A. Head above and back of inuvh the same color. 



a. Crissuiu barred transversely ; rest of under parts 



spotted or banded conspicuously with black (ex- 

 cept in/e/«a:). 



1. Outside of wings banded ; head like the 



back. 

 a. Throat white; rest of under parts black, 



finely banded with white 

 0. Under parts pure white ; sides from 



neck to crissuin banded with black 



2. Outside of wings plain ; head more rufous 



than the back. Sides of head and neck 

 white, conspicuously streaked with black ; 

 wings longer than tail, except in/e//a:. 

 a. Beneath white, spotted with black from 



chin to belly. Flanks rusty 

 B, Chin and upper throat black, spotted 

 with white ; rest of under parts plain 

 rufous ......' 



y. Beneath whitish, unspotted ; on sides 

 Jirown, Upper tail covert barred. Tail 

 longer than the wings .... 



b. Crissum barred transversely ; rest of under parts 



plain. 

 1. Upper tail coverts and exposed surface of 

 wings barred. 

 a. Tail feathers reddish-brown, barred 

 with black. Greater wing coverts spot- 

 ted with whitish. 



1. Beneath rusty white . . , 



2. Beneath rusty brown . . . 



fasciato-ventris, 

 plcurostictus. 



maculipectus, ' 



rutilus. 



felix. 



fi ' ' ^". ■ 



ludoviciaius. 

 berlandiert. 



