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 lst primary, 1.42, of 2d, 2.15, of longest, or 4th (measured 
from exposed base of lst 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. brunneicapillus ; the most 
apparent difference at first sight being in the greater concentration 
of black on the throat and jugulum in brunneicapillus, and the much 
smaller size of the remaining spots on the under parts, with the de- 
cided light cianamon of the posterior portion of the body. The outer 
and central tail feathers alone are marked as in C. 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. 
Smith-| Collee-| Sex sien 
sonian| tor’s | and Locality. Gollecred | Received from Collected by 
olleeted. F 
No. No. | Age. 
12,961 632 fof Cape St. Lucas. ata DoeanNtuUs:, Tsihe ey mleiecronts 
12,965 | 190 | ¢ a oie Cd POAC | MER se ah eer 
12,963 | 656 ro) s Hor ea ee al ets Banterertte 
16,959 {1,463 | Juv. ef ete rediy Cau deltas hu F ittxctoss 
32,166 | 4,988 of ts April 25,’60. See, Pah MT | Neeser orate 
32,167 Sahat “ 1861. STM Oe La ioe con 
(12,963.) Iris reddish-brown. 
} Campylorhynchus pallescens. 
Campylorhynchus pallescens, LAFRESNAYE, Rev. Zool. 1846, 93 (Mexico) ; 
not of Scrater (=C. balteatus). 
Campylorhynchus megalopterus, Scuater, P. Z. S. 1858, 298 (Oaxaca) ; 
1859, 363 (Xalapa) ; 371 (Oaxaca).—Is. Catal. 1861, 17, no. 105; 
not of Pr. A. N. Se. 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 
