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 throat, 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, aud but faint indications on the alular feathers. 
The grayish 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 Lafresuaye of his Merulaxis griseicollis, 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 ashy under 
parts, the narrow, scarcely appreciable black edgings of the throat 
feathers, the absence of white spots on the wing coverts, ete. The 
bill is smaller and more slender. 
Smith- Collec-| Sex When 
sonian}| tor’s | and Locality. Goilevted Received from Collected by 
No. | No. | Age. ae 
26,369 Se AA Xalapa, Mex. ats J. Krider. D’Oca. 
22,389 |37,661 | of es ann Verreaux: | ieee 
os Bal Ga Al) Ms abao38 [Guat. a9 Cab. Lawrence.| D’Oca. 
30,658 Sena meer Volean de Fuego, | Nov. 1861, O. Salvin. Salvin & Godm. 
36 92)| 2 Guatemala. 505 Cab. Lawrence.| _—........ 
(22,389.) ‘*C. prostheleucus.”’ 
Heterorhina leucophrys. 
Troglodytes leucophrys, Tscuup1, Conspectus Fauna Peruana.— Cypho- 
rinus leucophrys, CAB. Wiegm. Arch. 1847, 1, 206.—Scuarer, Catal. 
1861, 19, no. 123. 
Troglodytes guttatus, Harti. Verz. Mus. Brem. 1844, 28. 
Ifab. Peru to Costa Rica? 
(30,486.) Above dark rufous brown, brightest towards the rump; top of 
head dusky blackish, the feathers obscurely suffused at the ends with olivace- 
