118 



REVIEW OF AMERICAN BIRDS. 



[part I. 



with a suffusion of black above it on each side of the vertex. Cheek feathers 

 white, narrowly edged all round with black ; lores and stripe behind eye black. 

 A black line on each side the chin and upper part of the tliroat, all the feathers 

 of which are faintly and inconspicuously edged with black. Exposed surfaces 

 of secondaries like back, with obscure transverse lines of black, still more 

 indistinctly seen on the greater coverts. Tail feathers similarly marked. 

 No white spots on the coverts, and but faint indilations on the alular feathers. 



The grayi'Sh feathers of the belly have generally a lighter tip, or obscure 

 terminal light spot ; sometimes with a faint appearance of broad bars of 

 whitish and gray. 



Total length, 4.00; wing, 2.25 ; tail, 1.30; exposed portion of 1st primary, 

 .87, of 2d, 1.33 ; length of bill from forehead, 65, from nostril, .40, along gape, 

 .75 ; tarsus, .90; middle toe and claw, .76 ; hind toe and claw, .64. 



A specimen in Mr. Lawrence's collection, from Guatemala, differs 

 in a much deeper and more purplish rufous on the back. 



Specimens from Mexico are similar, but differ in having the top 

 of the head and nape reddish-brown, similar to the back, only a shade 

 lighter, instead of olive-gray. Should this be constant, as a geo- 

 graphical difference, the Mexican form will be entitled to a distinctive 

 name. None of the specimens agree very well with the description 

 by Lafresnaye of his 3Ierulaxis griaeicollis, and may all be really 

 distinct, especially in view of the widely different localities. 



This species, with a close resemblance to prostheleucus and leu- 

 costictus, may be readily recognized by the plumbeous asliy under 

 parts, the narrow, scarcely appreciable black edgings of the throat 

 feathers, the absence of white spots on the wing coverts, etc. The 

 bill is smaller and more slender. 



(22,389.) " C. pi-osthelmcus.' 



Heterortiina leiicoplirys. 



Troglodytes leucopkrys, TsCHUDi, Conspectus Fauna Peruana.— CiypAo- 

 Tinus leucopkrys, Cab. Wiegm. Arch. 1847, i, 206.— Sclatek, Catal. 

 1861, 19, no. 123. « 



Troglodytes guttalus, Uaktl. Verz. Mas. Brem. 1844, 28. , 

 Hab. Peru to Costa Rica ? 



(30,486.) Above dark rnfous brown, brightest towards the rump; top of 

 head dusky blackish, the feathers obscurely suffused at the ends with olivace- 



