290 REVIEW OF AMERICAN BIRDS. [PART I. 
Smith-|Collec-| Sex When 
sonian| tor’s | and Locality. Collected Received from Collected by 
No. No Age. a 
20,639 a & | Moose Factory, H.B.} May 17, ’60.| C. Drexler. =|  — wewese 
AG a0 .. | Carlisle, Pa. [Lake. ete Bk. bairds © |) * nt eemercts 
27,298 | 1,324 | .. | Fort Resolution, S. S65 ARMOR ENZie: yy) 1) ticeattee 
19,543 ee 50 oe June 23, R, Kennicott. |  sisiraae 
27,297 | 1,212 | .. | Big Island, S. Lake. ar aD MRAIP 0 ape) holy (ie Wee 
27,296 216 | .. | Fort Yukon. J. Lockhart. wesieels 
28,150 oe Ob) Ki SLE Eon ge A scree 
23,218 589 | .. | Fort Good Hope. eee RR. MeBarlane, | 4) se\ceamer 
34,352 ae & | Los Pinos, N. M. June 20; °64.| Dr. B,Coues. (| shedep 
34,354 2) “a iC.eAm;, Ka SSN a RS ces 
30,556 “i go | At sea, W. coast, | Oct. 20,’63. | Capt. J.M. Dow. | _ «..... 
a 183 | Q | Panama R&, R. eee Cab. Lawrence. M’Lean. & Galb. 
(34,352.) 5.90; 12.10. (34,354.) 6.00; 11.80. 
Petrochelidon swainsoni. 
Hirundo melanogaster, Swarnsoy, Phil. Mag. I, 1827, 366 (Mexico).— 
Petrochelidon melonogaster, Cas. Mus. Hein. I, 1850, 47. 
Petrochelidon swainsoni, Scuater, P. Z. S. 1858, 296; 1859, 376.—Is. 
Catal. 1861, 40, no. 244. (Swainson’s name changed as inappro- 
priate.) 
Hab. Highlands of Mexico. 
This species is almost precisely like P. Junifrons, but is smaller, and the 
frontlet, instead of being creamy or rosy white, is chestnut brown like the 
throat; the lores are less dusky, and there is no dusky at base of upper 
mandible. In these respects it resembles P. fulva, but will be readily dis- 
tinguished by the large glossy black spot on the throat, and blackish chin, as 
well as comparative absence of reddish on crissum and sides. 
Two specimens, both marked males, differ considerably in size, as 
shown by the following measurements. In one (22,376) the forehead 
is of the same shade of rufous as the throat, and the black spot on 
the throat very small; in the other, which is decidedly larger, the 
forehead is considerably paler than the throat, and the throat spot 
more distinct, the chestnut of throat and sides of head much darker. 
(No. 22,376, 4.) Total length, 4.50; wing, 3.90; tail, 2.25; difference of 
quills, 1.90; length of bill from forehead, .35, from nostril, .21, along gape, 
.55; tarsus, .48; middle toe and claw, .60, claw alone, .20; hind toe and ~ 
claw, .37, claw alone, .19. 
(No. 33,572.) Total length, 4.90; wing, 4.30; tail, 2.20; length of bill from 
forehead, .41, from nostril, .22, along gape, .60; tarsus, .53; middle toe and 
claw, .66, claw alone, .21; hind toe and claw, .38, claw alone, .21. 
ee 
Smith-|Collec-| Sex When 
sonian| tor’s | and Locality. Gollected Received from Collected by 
No. No. | Age. : 
22,376 |40,745 | of Mexico. ADE Vernesuxs, () “i. Bere 
33,572 136 Mirador, Mex. Aug. 1863, Dr. Sartorius. |  ...... 
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