398 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
Fam. TROGLODYTIDA. 
“2. Cyphorinus lawrencii Scl. 
Apparently notcommon. While taking an evening walk through the 
thick forest I was suddenly startled by a number of these Wrens which 
I had disturbed in their nest, for it was quite dusk. They seemed to be 
on every side of me, uttering a shrill chirping protest against my intru- 
sion. I could barely discern their dusky forms as they flitted through 
the bushes. I fired almost at random, and succeeded in securing one 
specimen. 
They seemed to be gregarious, as I do not think there were less than 
ten or a dozen roosting together when I disturbed them. 
*3. Henicorhina leucosticta (Cab.). 
Rare. Only one specimen secured in the dense forest. 
*4. Thryophilus zeledoni Lawr. 
Apparently rare. The single specimen secured was shot from a little 
bush in open ground. . 
*5. Thryophilus castaneus (Lawr.). 
Rather common; especially in the deep woods. Two specimens. 
6. Thryophilus thoracicus Salvin. 
Apparently rare. One specimen killed at the edge of the forest. 
Fam. MNIOTILTIDZ. 
7. Geothlypis trichas (Linn.). 
Abundant. Three specimens. 
“8. Geothlypis bairdi Nutting, sp. nov. 
Adult $: Entire forehead and fore part of crown, lores, orbits, auric- 
ulars, and malar region deep black. Upper parts rather dark but 
bright olive-green (much as in G. velata), including whole of occiput 
and hinder portion of crown; lower parts bright yellow (much as in G. 
velata), the entire sides, however, yellowish olive-green. Bill brownish 
black, the gonys sometimes paler; legs and feet horn-brown. Wing, 
2.30-2.35; tail, 2-2.10; culmen, .60; depth of bill at base, .20; tarsus, 
.35; middle toe, .60. 
Adult 2: Similar to the ¢ , but lacking the black on the head, which is 
olive-green, the forehead and superciliaries distinctly, but not abruptly, 
more yellowish. Wing, 2.20; tail, 1.90; cuimen, .55; depth of bill, .18; 
tarsus, .55; middle toe, .55. 
Hab. os Sabalos Nicaragua (NUTTING). 
This species is apparently not very closely related to any other 
hitherto described. In coloration it most resembles G. speciosa, with 
which it agrees in the extent and distribution of the black mask; but 
this in G. speciosa is not clearly defined on the crown, as in the present 
species, but fades insensibly into the olive of the occiput. G@. speciosa 
