36 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 



Family.— CAPRI MULG ID ^. 



Sub-Fam.— CAPRIMULGIN^. 



1. CaPRIMULGUS BIFASCIATUS. Gould. 

 Caprimulgus bifasciatus, GoidJ, in Proceedings of the Zoological Society, February 1837, p. 22. 

 C. capite nigro fusco et fulvescente ornatus ; caudd alho hifasciatd, fascia termi- 

 nali lata : primd angustd ; primariis nigrescentibusfascid angustd albd ad medium : 

 alis spuriis maculd albd notatis ; gutture lunuld albd ; secundariis tectricibusque 

 alarum maculd fulvescente ad apicem ; crisso pallid^ rufescente ; rostro pedibusque 

 fuscis. 

 Long. tot. unc, 9| ; alee, 6j ; 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 



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