36 
ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 
Family.— C APRIMULGIDJE. 
Sub-Fam.— CAPRIMULGINiE. 
1. Caprimulgus bifasciatus. Gould. 
Caprimulgus bifasciatus, Gould, in Proceedings of the Zoological Society, February 1837, p. 22. 
C. capite nigro fusco et fulvescente ornatus ; caudd albo bifasciata, fascia termi- 
nal i lata : primd angusta ; primariis nigrescentibus fascia angusta alba ad medium : 
alls spuriis macula alba notatis ; gutture lunula alba ; secundariis tectricibusque 
alarum macula fulvescente ad apicem ; crisso pallide rufescente ; rostro pedibusque 
fuse is. 
Long. tot. unc., 9f ; alee, ; caudce , 5 ; tarsi f . 
Front and back of head gray, mottled with black and with little fulvous. The latter 
colour more abundant, and in larger markings in the interscapular region, and 
on the wing-coverts. The black markings give a somewhat streaked appearance 
to the back of head and interscapulars. On the back of throat the fulvous tint 
is so much pronounced, that a collar is formed which is continued under a 
white one round the breast. Wings : primaries brownish-black ; four external 
ones, with a large white mark, forming a band, at about one-third of their 
length from their extremities : these white marks are edged with fulvous, and 
the part on the outer web of the first primary, is wholly so coloured. The 
other primaries are marked with reddish brown, as are the secondaries and 
tertiaries, the marks becoming more numerous and smaller, and the colours 
more mottled, nearer the back. Tail : upper tail-coverts and two central 
feathers of tail marked like those on the back ; the black, however, forming- 
narrow interrupted transverse bars. The pair next to these central ones have 
near their extremities a large white mark, but only on the inner shaft. In 
the three succeeding pairs, the white spot extends on both sides of the shaft, 
and in each pair increases somewhat in size ; so that in the external pair, the 
white spot is merely bordered with a very narrow, faint margin, of brown 
and fulvous. At about half their length, all the feathers, with the exception 
of the central pair, have a smaller white mark, but only on the inner side of 
the shaft. This mark is transverse, in the form of a band, and the white 
blends into fulvous on the edges of the webs. Outer web of these same 
external feathers, are transversely barred with black and fulvous. Under 
surface . — Chin, breast, belly, and lining of wings, dirty fulvous, with numerous 
