^Pip 



ATTICORA. 



807 



Attlcora pileata. 



Atiicora pileata, Gould, Pr. Z. S. 1858, 355 (Qaatemala). — Sclateb & 

 Salvin. Ibia, I, 1859, 13. 



llah, Ouatemala. 



(No. 30,714, % .) Top and sides of head and neck black, with dull bluish 

 glo»s. Interscapular region and sides of body smoky brown ; above passing 

 nuuer gradually into blackish-brown of rump, wings, and tail; beneath ab- 

 ruptly defined against blackiih-brown of crissuni. Rest of under parts and 

 tibiiE white; this color, however, on the chin, throat, and jugulum (the former 

 two especially) margining the feathers narrowly only, and exposing much of 

 the suioky brown bases. Tibial feathers brown at base. 



(No. 30,714, % .) To'al 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. Cabaais is in error in suggesting that it may 

 be the young of cyanoleuca. 



,1 > .. .i; 



,>.;-.'];i".r!<j 



Neochelidon, Sclater. 



Neochelidon, Sclater, Catal. Am. Birds, 1862, xvi. (Type Ilirumio 

 tibialis, Cass in.) 



Microrhelidov Sclater, Catal. 1861, 39. (Same type ; name pre- 

 occupied.) 



Similar to preceding in hill 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. 



Pelrochelidon tibialis, Cass. Pr. A. N. So. 1853, 370 (Brazil).— A/icro- 

 chelidon tibialis, Sclater, 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. tibialis, of Cassin. This species 

 is the lea.st of our Swallows, and resembles a Swift rather than a 

 Swallow. It is dark smoky or sooty brown above and on crissuni. 



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