ATTICORA. 307 
Atticora pileata. M 
Atticora pileata, Gout, Pr. Z. S. 1858, 355 (Guatemala).—Scuater & 
Satviy, Ibis, I, 1859, 13. 
Hab. Guatemala. 
(No. 30,714, 4%.) Top and sides of head and neck black, with dull bluish 
gloss. Interscapular region and sides of body smoky brown; above passing 
rather gradually into blackish-brown of rump, wings, and tail; beneath ab- 
ruptly defined against blackish-brown of crissum. Rest of under parts and 
tibize white; this color, however, on the chin, throat, and jugulum (the former 
two especially) margining the feathers narrowly only, and exposing much of 
the smoky brown bases. Tibial feathers brown at base. 
(No. 30,714, 4.) Total length, 4.75; wing, 3.75; tail, 2.45; depth of fork, 
-75; difference of primaries, 1.75; length of bill from forehead, .33, from 
nostril, .17, along gape, .43, width, .35; tarsus, .43 ; middle toe and claw, .50, 
claw alone, .20; hind toe and claw, .35, claw alone, .17. 
This species is totally different in appearance from any other known 
American Swallow. Cabanis is in error in suggesting that it may 
be the young of cyanoleuca. 
Smith-|Collec-| Sex When 
sonian| tor’s | and Locality. Gallected Received from Collected by 
No. No. | Age. 7 
30,713 | 3,704 | 9 Coban, Vera Paz. Feb. 1862. O. Salvin. Salvin & Godman. 
oe oe oe “ce 
30,714 | 377| 
u 
NEOCHELIDON, Sclater. 
Neochelidon, Scuarrr, Catal. Am. Birds, 1862, xvi. (Type Hirundo 
tibialis, CASSIN.) 
Microchelidon, Scuater, Catal. 1861, 39. (Same type; name pre- 
occupied.) 
Similar to preceding in bill and toes; the tarsus, however, with the joint 
covered with feathers, which invade the inner face at the upper end. Tail 
less forked ; fork one-fourth the length. 
Atticora tibialis. 
Petrochelidon tibialis, Cass. Pr. A. N. Se. 1853, 370 (Brazil).—Micro- 
chelidon tibialis, Scuater, Catal. 1861, 39, no. 238.—Neochelidon 
tibialis, ScLaTER, Catal. 1862, xvi (Errata). 
Hab. Isthmus of Panama to Brazil. 
The type of the section is the H. trbialis, of Cassin. This species 
is the least of our Swallows, and resembles a Swift rather than a 
Swallow. It is dark smoky or sooty brown above and on crissum, 
