TIIRYOTHOllLH, 



125 



n. M llitlH. 



WoodhouM, 



(lovicianus. 



TlirjotliortiH petenicus. 



Thryothorui petetiicus, Salviit, Pr. Z. S. May, 1863, 187 (Peten). 



(Mr. Salvin's type, No. 112.) Bill longer than the head; tail and wings 

 about tKiual, Color above reddiwh-lirown ; more rufouH on the rump. Upper 

 tail coverts grayinh-brown, rather obriuurely banded with hluck. ( inter eilges 

 of priiiiarieH marked with ksruyitih and black, of HecondarieH and wlioltt exjxjsed 

 surface of wing with very obsolete, almost inappreuiable du.tky bars. Under 

 part.t whitish, nearly pure on throat and middle of belly, tinged with fulvous 

 (and with the feathers "e.y slightly tipped with dusky) across the breast ; 

 the sides more like the back, but pa'.er. Crissura with broad white and black 

 bars ; Hanks obscurely barred with dusky. A broad line of white, edged 

 with black, from bill over eye to nape : tho^ie of opposite Bides connected by 

 a cQUuealed series of blaok-edged v.iite streaks on the nuchal feathers, which 

 form a half collar with more distinctly marked feathers on the side of neck 

 behind the ear coverts, whii h are lik^ the back. Lower part of cheek feathers 

 wliite, edged with dusky. Tail feathers black ; the outer webs and tips 

 flpotted or blotched with dirty white ; the middle feathers ashy-brown, with 

 spotted broken bars of black, about one-third their interspaces. Rump with 

 concealed spots of white. Bill longor than the head. 



(Type.) Total length, 5.30; wing, 2.25; tail, 2.25; graduation, .2(i ; ex- 

 posed portion of Ist primary, .'lO, of 2d, 1.40, of longest (measured from 

 exposed base of lat primary), 1.70; length of bill from forehead, .85, from 

 nostril, .55, along gape, .92; tarsus, .Sii ; middle toe and claw, .80; claw 

 aloue, .23 ; hiud toe and claw, .65 ; claw alone, .27. 



This species is very similar in coli)ration and general appenraiico 

 to the typical styles of T. hewuhii, from the eastern United States. 

 The bill, however, is much larger and longer, the legs nuicli stouter, 

 and the wings and tail about equal, instead of the latter being longer. 

 In these points it agrees more nearly with T. ludomviaiiuH, as well 

 as in the character of the nostrils. The white spots of the nape are, 

 however, wanting in hewickii, in which also the wing is more dis- 

 tinctly barred ; the bands on the upper surface of the tail twice as 

 numerous ; the white markings quite similar ; the crissal bars nar- 

 rower and less prominent. 



This species appears closely related to Thryothorvs alhinucha, of 

 Cabot, and murinus, of Hartlaub, though differing in some respects 

 from their descriptions. It is quite possible that the two latter may 

 prove to be the same species, even if different from petenicus. All 

 8eem to agree with T. hewickii in the black tail feathers, varied a 

 little with white. 



For the opportunity of examining th''% species I am indebted to 

 Mr. Ralvin, who kindly transmitted his unique type for the purpose. 

 (No. 112, Sakleek River, near Peten, Guatemala, April, 18G2.) 



#:, 





