PHALACROCORAX. 153 
Juv. Supra griseo-bronzinus, plumis nigro marginatis ; pileo et collo postico saturate brunneis ; facie laterali 
et corpore subtus cinerascenti-brunneis ; abdomine, hypochondriis et subcaudalibus nigris. 
Hab. Eastern Norta America generally, breeding to the northward of the United 
States (P. auritus); Sourn Attantic anD GutF Srares anp Lower MIssisstprr 
VALLEY, north to Southern Illinois®!™ (P. floridanus)—MeExico, Cozumel I. 
(Gaumer®); British Honpuras, Turneff Lagoon’, Man-o’-War Cay, Belize coast § 
(0. S.). 
This species, like the preceding, has twelve tail-feathers, and is therefore an ally of 
P. pelagicus, but differs from the latter in the black-edged feathering of the upper 
surface. It belongs, however, to a different group of Cormorants, as in the breeding- 
season no white flank-spots are assumed, and the white ornamental plumelets are 
otherwise disposed, taking the form of two lateral tufts, one on each side of the crown. 
These crests, which spring from the side of the head just behind the eye, are either 
black, or white intermixed with a few black plumes. 
Four races of this form of Crested Cormorant are recognized by American ornitho- 
logists, viz.: P. auritus (i. e. P. dilophus, auct.) and P. floridanus of Eastern North 
America, both with black crests ; these are replaced on the Pacific coast by P. cincinnatus 
and P. albociliatus, in which the crests are wholly or partially white. 
We follow Mr. Ogilvie Grant in recognizing two forms only, as he has pointed out 
that the characters of P. auritus and P. floridanus merge into each other, and the same 
may be said of P. cincinnatus and P. albociliatus. 
Of P. auritus we have received a few examples from Cozumel Island, off the coast 
of Yucatan, from Dr. Gaumer ®; and Salvin met with the species on Man-o’-War Cay, 
off the Belize coast®. After climbing along the matted tree-roots to the northern end 
of the Cay, he found the birds sitting on the outer boughs of the fringe of mangroves 
some twelve feet above the water. It was the breeding-season, and the nests, | 
which were strongly built of sticks, hollowed inside, and partly lined with freshly- 
picked mangrove-leaves, contained from one to four chalky-white eggs, the latter 
number appearing to be the full complement. 
3. Phalacrocorax cincinnatus. 
Carbo cincinatus, Brandt, Bull. Acad. St. Pétersb. iii. p. 55°. 
Phalacrocorax cincinatus, Ogilvie Grant, Cat. Birds Brit. Mus. xxvi. p. 373°. 
Phalacrocorax dilophus cincinatus, A. O. U. Check-l. N. Amer. Birds, 2nd ed. p. 43°; Ridgw. 
Man. N. Amer. Birds, 2nd ed. p. 78%. ia) 
Phalacrocorax dilophus albociliatus, Ridgw. Water Birds N. Amer. ii. p. 150°; A. O. U. Check-l. 
N. Amer. Birds, 2nd ed. p. 43°; Ridgw. Man. N. Amer. Birds, 2nd ed. p. 78”. 
P. aurito similis, sed criste plumis in ptilosi estiva plerumque vel omnino albis, rarius nigro mixtis : rostro, 
pedibus, iride, facie gulaque nudis sicut in P. aurito coloratis. Long. tota circa 30°5, ale 13-0, caude 5:5, 
culm. 2°25, tarsi 2°6. (Descr. exempl. ad. ex Aleutian Is. Mus. Brit.) 
BIOL. CENTR.-AMER., Aves, Vol. III., October 1901. 20 
