PROGNE. PAT | 
from Atlantic to Pacific, as well as from Cape St. Lucas. Some 
special localities are as follows :— 
Smith- Collec-| Sex When 
sonian| tor’s | and Locality. Gollected Received from Collected by 
No. No Age. UNIT 
1,561 fof Carlisle, Pa. May 22, ’44. S23 Bo 3Baird:: 7 oo ae me aereretts 
1,129 Q a July 18, ’43. se) eo) RallWRUR galisteatceea 
1,596 (of ee TINe Ds Pa erisincie, 2 1 ree 
§, 204 Ao & | Mo. of Yellowstone.| July, 1856. Lt. Warren. Dr. Hayden, 
5,492 | 607 2 | Petaluma, Cal. | April, 1856. Es SAMUELS. ei) eee merece 
5,493 | 576 of i s Se te ee eee el Poke Mess sper 
5,049 ete & | Indianola, Tex. Mar. 12, 755. Capt. J-seopen i |) seats 
3,952 | 23 o | Coahuila, Mex. May, 1853. LitaConGhes (Wi) \ Messen 
12,951 | 450 Sf | Cape St. Lucas. yoke Ae eins I e eica tc 
26,448 |3,339 of po Nov. 5, 759. SSP [Ui ESe As Oe eee. 
37,003 | 549 3 | Fort Whipple, Ariz.| Aug. 11, ’64. Dr Ek COWES ew ian Mesias 
11,611 ae -. | Riceboro’, Ga. May 22, °49. Jos; Leconte; || Veer 
! 
(1,129.) 7.80; 16.50; 5.92, (1,596.) 8.16; 16.60; 6.00. 
Progne cryptoleuca. 
Progne cryptoleuca, Barb. 
Hirundo purpurea, D’Ors, Sagra’s Cuba, Ois. 1840, 94 (excl. syn.).— 
Progne purpurea, Cas. Jour. 1856, 3.—Gunpiacu, Cab. Jour. 1861. 
Hab. Cuba, and Florida Keys? (Perhaps Bahamas.) 
(No. 34,242, §%.) Color much as in P. subis—rich steel blue, with purple 
or violet gloss ; the wings and tail, however, much more decidedly glossed, and 
with a shade of greenish. The feathers around the anus and in the anterior 
portion of crissum with dark bluish down at base, pure snowy white in the 
middle, and then blackish, passing into the usual steel blue. The white is 
entirely concealed, and its amount and purity diminish as the feathers are 
more and more distant, until it fades into the usual gray median portion of 
the feather. The usual concealed white patch on the sides under the wings. 
(No. 34,242.) Total length, 7.60; wing, 5.50; tail, 3.40; perpendicular 
depth of fork, .86; difference between Ist and 9th primary, 2.75; length of 
bill from forehead, .55, from nostril, .84; along gape, .86; width, .58; tarsus, 
-53; middle toe and claw, .79; claw alone, .24; hind toe and claw, .52; claw 
alone, .25. 
This species has a close external resemblance to P. subis, for 
which it has usually been mistaken. It is of nearly the same size, 
but the feet are disproportionately smaller and weaker; while the 
wings are shorter, the tail is as long and more deeply forked; the 
feathers considerably narrower, and more attenuated (the outer .40 
wide, instead of .46). The colors above are more brilliant, and ex- 
tend more over the greater wing coverts and lining of wings, while 
the quills and tail feathers have a richer gloss of purplish, changing 
to greenish. An apparently good diagnostic feature is the concealed 
pure white of the feathers about the anal region, replaced in subis by 
grayish, rarely approximating to whitish. 
