154 PHALACROCORACIDA. 
Hab. Pactrtc Coast or Norta America, from Alaska to the Gulf of California and the 
Revillagigedo Islands °. 
This species is closely allied to P. auritus and is divided by the American 
ornithologists into two races, a northern and a southern one, viz. P. cincinnatus and 
P. albociliatus. These are separated by their size, but the differences are so slight 
that we agree with Mr. Ogilvie Grant that they cannot be upheld. He considers 
P. cincinnatus to be only a subspecies of P. auritus, as the distinction of the black 
and white crest-feathers is apparently not constant. 
P. albociliatus, which is the southern form of White-crested Cormorant, is said to 
inhabit Southern California, whence it extends to the island of Socorro 7, Mr. Anthony 
(Auk, 1898, p. 311) did not meet with it there or on the other Revillagigedo Islands. 
4, Phalacrocorax vigua. 
Hydrocoraz vigua, Vieill. N. Dict. d’ Hist. Nat. viii. p. 90°. 
Phalacrocorax vigua, Ogilvie Grant, Cat. Birds Brit. Mus. xxvi. p. 8787; Salvad. & Festa, Boll. 
Mus. Torino, xiv. no. 339, p. 13”. 
Halieus brasilianus, Licht. Preis-Verz. Mex. Vog. p. 3 (1830) * (cf. Cab. J. f. Orn. 1863, p. 99 *\ ; 
Wagler, Isis, 1831, p. 530°. 
Carbo brasilianus, Cassin, Pr. Acad. Philad. 1860, p. 197 - 
Phalacrocorax brasilianus, Salv. P. Z. 8. 1870, p. 219°; Nutting, Pr. U.S. Nat. Mus. vi. pp. 378°, 
396°; Zeledon, An. Mus. Nac. Costa Rica, 1887, p. 132 a 
Phalacrocoraz sp., Richm. Pr. U. 8. Nat. Mus. xvi. p. 532 », 
Ptil. estiv. Supra saturate cinereo-bronzinus, plumis nigro marginatis quasi lanceolatis, tectricibus alarum 
dorso concoloribus ; dorso postico, uropygio et supracaudalibus nigris, vix viridi nitentibus ; pileo et collo 
undique cum corpore subtus toto nigris, vix viridi nitentibus ; primariis et rectricibus nigris ; criste 
elongate utrinque postocularis plumis albis filamentosis ; regione oculari, facie laterali et collo laterali 
plumulis filamentosis albis ornatis; fascia albida gulam et rictum nudum marginante ; iride saturate 
cerulea. Long. tota circa 30-0, ala 11:3, caude 6°35, culm. 2:2, tarsi 2°2. (Descr. maris adulti ex 
Chuput, Patagonia. Mus. Brit.) 
Ptl. hiem. ptilosi zstive similis, sed sordidior, colli plumulis albis ornamentalibus eisque gulam marginantibus 
absentibus. (Deser. maris adulti ex Huamachal. Mus. nostr.) 
Juv. Magis brunnescens, notei plumis sicut in adultis lanceolatis, dorso postico et uropygio nigris ; pileo colloque 
toto et corpore subtus brunneis, illis paullo saturatioribus, hypochondriis nigricantibus ; gula nuda albo 
distincte marginata. (Descr. exempl. juv. ex Costa Rica. Mus. nostr.) 
‘ 
Hab. Norra America, Texas 2.—MeExico (Wagler ®, Deppe & Schiede*®); GUATEMALA, 
Lake of Peten, Huamachal (0. 8.2); Nicaracua, Lake of Nicaragua (hichmond 32), 
San Juan del Sur®, Ometépe ° (Nutting), Rio Frio, Rio Escondido (Aichmond *) ; 
Costa Rica (Endres?), Rio Sucio (Zeledon™); Panama, Castillo (EL. Arcé®), 
Rio Coconati and Rio Sabana (Festa *).—Coasts anp Lakes oF SovTH AMERICA 
to Patagonia and Chile ?. 
P. vigua and its close ally, P. mexicanus, differ from the other Cormorants of 
Central America in the lanceolate form of the dorsal plumes, which are edged with 
