HIRUNDO. 293 
| | 
Smith-|Collec-| Sex Wh 
svnian, tor’s | and Locality. . Coll Tak Received from Collected by 
No. No. | Age OT CUe. 
24,381 16 | o | Spanishtown, Jam. | Dec. 1861. Wind Marches iim cmacietices 
24,382} 16 + | a es ile LE ee Md ctatne 
24,583 16 | Q s§ “s ia me mer (en eee oe 
2L,584 on 2 | = ih oe eee eer 
30,281 5c 0. s 1863. SSe ii’ Wad ll eI See ee 
pyow| |. | «a = ee 
30,283 2 | A | ce ss SOL e ad, tek ll nee Dla 
HIRUNDO, Liyy. 
Hirundo, Linn. Syst. Nat. I, 10th ed. 1758,191. (Type H. rustica, Linn.) 
Under the generic head of Hirundo I propose to combine several 
groups of American Swallows agreeing in moderate, depressed bill, 
with straight commissure, and lateral nostrils overhung by mem- 
brane; the tarsi feathered only at the upper end, or else entirely 
bare ; the lateral claws moderate, not extending beyond the base of 
the median; the edge of the outer primary without hooks; the tail 
variable in character, from a very deep fork to a slight emargination 
only. The relationships to the other genera have already been ex- 
pressed in the diagnosis presented in the beginning of the article on 
the family. 
The following characters express the peculiarities of the different 
sections or subgenera of Hirundo :— 
jatter with lateral feathers edged internally near end with whitish. Forehead 
without frontal band, other than an almost inappreciable gloss of chestnut. 
Total length, 4.55; wing, 4.00; tail, 2.15; difference between quills, 1.80; 
length of bill from forehead, .30, from nostril, .17, along gape, .54, width, .43. 
Feet mutilated. 
The well-marked jugular or pectoral band, white throat and cheeks, and 
absence of distinct frontlet will readiiy distinguish this species from lunifrons 
and its allies. It may be that a more decided frontlet exists in more perfect 
plumage, although there is nothing to indicate that this has not been attained 
in the specimen. 
This species appears to have been overlooked by all writers subsequent to 
Mr. Peale. 
Smith-|Collec-| Sex : When 
sonian| tor’s | and Locality. 4 Received from Collected by 
Collected. 
No. No. | Age. 
14,999 |C 377) ¢ Callao, Peru. July 12, °39.| U.S. Expl. Exped. T. R. Peale. 
(14,999.) Type. Irids brown. 
