CAMPYLORHYNCHUS. 



101 



terially, except in having the spots less distinct beneath ; the white streaks 

 less conspicuous above ; the white of the wings soiled with rufous. Speci- 

 mens vary considerably in the proportional as well as absolute thickness 

 and length of the bill ; thus, No. 32,167 measures .80 from nostril to end 

 of bill, instead of .60, as given below for No. 12,965. 



12,965. Total length, 7.50; wing, 3.30; tail, 3.40, its graduation .45; ex- 

 posed portion of 1st primary, 1.42, of 2d, 2.15, of longest, or 4th (measured 

 from exposed base of 1st primary), 2.45 ; length of bill from forehead, .90, 

 from nostril, .60 ; along gape, 1.07 ; tarsus, 1.02 ; middle toe and claw, .90 ; 

 claw alone, .25 ; hind toe and claw, .76 ; claw alone, .35. 



This species is most nearly allied to C. hrunneicapillus ; the most 

 apparent difference at first sight being in the greater concentration 

 of black on the throat and jugulum in hrunneicapillus, and the much 

 smaller size of the remaining spots on the under parts, with the de- 

 cided light cinnamon of the posterior portion of the body. The outer 

 and central tail feathers alone are marked as in G. affinis, the inter- 

 mediate ones being entirely black, with the exception of a white 

 subterminal band. 



This is one of the most characteristic birds constituting the 

 isolated Fauna of Cape St. Lucas. Like nearly all the species 

 peculiar to this remarkable locality, it is exceedingly abundant, 

 breeding in immense numbers. It has not yet been detected else- 

 where, though it may possibly be found on the lower Colorado. 



(12,963.) Iris reddish-brown. 



Campylorliynclius pallescens. 



Campylorhynchus pallescens, Lafresnate, Rev. Zool. 1846, 93 (Mexico) ; 



not of ScLATER (=C. balteatus). 

 Campylorhynchus megalopterus, Sclater, P. Z. S. 1858, 298 (Oaxaca) ; 



1859, 363 (Xalapa) ; 371 (Oaxaca).— 1b. Catal. 1861, 17, no. 105 ; 



not of Pr. A. N. Sc. Phila. 1856, 264 (which is true megalopterus). 



Hab. Southern Mexico. 



(No. 13,659.) Body varied with brown and soiled white; no reddish. Top 

 of head brownish-ash, showing more or less the pure brown centres of the 

 feathers ; nape streaked with black and white ; rest of upper parts banded 

 transversely with soiled white and blackish in about thirteen or fourteen 



