776 
U. S. P. R R. EXP. AND SURVEYS ZOOLOGY — GENERAL REPORT. 
There is but one species of Dafila inhabiting the United States, the D. acuta, though the 
D. urophasiana is quoted as belonging to our -western coast as well as that of South America. 
The D. bahamensis, 1 by some supposed to be the same with D. urophasiana, if really found in 
the Bahamas, in all probability extends its flight to our southern coast. 
The characters of Dafila acuta are as follows : 
Tail of 16 feathers. Head uniform brown. Neck and beneath plain white. Sides and fore 
part of back finely lined transversely with black and white. Wing coverts plain, terminated 
narrowly by reddish buff; then a purplish green speculum passing into black behind, and tipped 
with white. Scapulars and tertials streaked with black and hoary whitish. 
DAFILA ACUTA, Jenyns. 
Pintail ; Sprigtail. 
Anas acuta, Linn. Syst. Nat. I, 17GG, 202.— Gmelin, I, 258 — Wilson, Am. Orn. VIII, 1814, f. 2; pi. Ixviii.— 
Bonap. Obs. No. 258.— Temm. Man. II, 838, (Europ. sp.) -Aud. Orn. Biog. Ill, 1835, 214 : V, 615 ; 
pi. 227.— Id. Syn. 279.— Ib. Birds Amer. VI, 1843, 266 ; pi. 390. 
Phasianurus acutus, Wagler, Isis, 1832, 1235. 
Anas (Da/da) acuta, Jenyns, Man. 1835, 232. Europ. sp. 
Dafila acuta, Bon. List, 1838. 
.Inas (Baschas) acuta, Nuttall, Man. II, 1834, 386. 
Anas caudacuta, (Ray,) Sw. F. Bor. Am. II, 1831,441. 
Dafila caudacula, Stephens, Shaw's Zool. XII, n, 1S24, 127.— Jard. Br. Birds, IV, 120.— Eyton, Mon. Anat. 
1838,113. European. 
Dafila longicauda, Brehm. 
Pintail, Pennant, Arc. Zool. II, 566.— Lath. Syn. Ill, n, 526. 
Dafila acuta, var. A. americana, Bon. Compt-s Rendus, XLI1I, 1856. 
Sp. Ch. — Tail of 16 feathers. Bill black above and laterally at the base ; the sides and beneath blue. Head and upper 
part of neck uniform dark brown, glossed with green and purple behind. Inferior part of neck, breast, and under parts white ; 
the white of neck passes up to the nape, separating the brown, and itself is divided dorsally by black, which, below, passes into 
the gray of the back. The back anteriorly and the sides are finely lined transversely with black and white. The wings a'e 
plain and bluish gray ; the greater coverts with a terminal bar of purplish buff, below which is a greenish purple speculum, 
margined behind by black, and tipped with wh:te. Longest tertials striped with silvery and greenish black. Scapulars black, 
edged with silvery ; crissurn and elongated tail feathers black ; the former edged with white. 
Female with only a trace of the markings of the wing ; the green of the speculum brownish, with a few green spots. The 
feathers of the back are brown, with a broad U or V-shaped brownish yellow bar on each feather anteriorly. Sometimes those 
bars appear in the shape of broad transverse lines. 
Length, 30 inches ; wing, 11 ; tail, 8.60 ; tarsus, 1 .75 ; commissure, 2.36. 
Hab. — Whole of North America and Europe. 
The young male is sometimes difficult to recognize when without the long tail, and with the 
markings those, in part, of both sexes. 
1 The following synonymy is assigned to Anas urophasianus, though it is most probable that Anas bahamensis is a distinct 
species : 
Dafila bahamensis. 
jlnas bahamensis, Linn. Syst. Nat. I, 1766, 199. 
Paecilonetta bahamensis, Evton, Mon. Anat. 1838, pi. 112.— Gay, Fauna Chilena.— Cassin, Gilliss' Chile, II, 1855, 203. 
Anas ilalhera, Bonn. 
Jlnas urophasianus, Vigors, Zool. Jour. IV, 1829, 357.— Ib. Zool. of Blossom, 1839, 31 ; pi. xiv. 
Dafila urophasianus, Eyton, Mon. Anat. 1838. 
Phasianurus vigorsii, Wagler, Isis, 1832, 1235. 
