CONDOR. A413 
the bill, pass over the auditory region, and descend along the 
sides of the neck: these fleshy cords acquire by desiccation, 
in stuffed specimens, the appearance of a series of tubercles 
or wrinkled protuberances: a double string of a similar sub- 
stance passes above the eye, which is small, much lengthened, 
and lateral, being set far back from the bill: the irides are of 
an olive grey. ‘Their cavernous structure enables the bird to 
swell out all these appendages at pleasure, like the turkey : 
the crest, however, must be excepted, which is very dissimilar 
to the flaccid, pendulous cone of the turkey, and incapable of 
dilatation. The orifice of the ear is very large, subrounded, 
but hidden under the folds of the temporal membrane. The 
occiput exhibits a few short brown bristles. Around the 
lower part of the neck above is a beautiful half collar of silky 
and very soft down, as white as snow, which separates the 
naked parts from the feathered body. In front this collar is 
interrupted, and the neck is bare down to the black plumage : 
this gap in the collar can however only be discovered on‘close 
inspection. The whole plumage is of a very deep blue black ; 
the tips of the secondaries and the greater wing-coverts on 
the outer web only being of a whitish pearl-grey: the first 
seven outer quills are wholly black, twenty-seven being white 
on their outer web : the third quill is the longest. The wings 
are three feet nine inches long, reaching nearly to the tip of 
the tail, but not passing beyond, as in the closely related 
species the Californian condor. The tail is very slightly 
rounded at the end, rather short in proportion to the bird, 
measuring thirteen inches. The feet are bluish: toes con- 
nected at their base by a membrane. 
The female is entirely destitute of crest or other appendages. 
The skin which covers the head is uniformly blackish, like 
the plumage, in which there is only a little cinereous on the 
wings: in this sex the wing-coverts, which in the male are 
white at tip from the middle, are of a blackish grey. This 
circumstance is very conclusive, inasmuch as the white forms 
a very conspicuous mark on the wings of the male, which has 
