154 PHALACEOCOEACID^. 



Hah. Pacific Coast of Noeth Ameeica, 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. alhociliatus. 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. alhociliatus, which is the southern form of White-crested Cormorant, is said to 

 inhabit Southern California, whence it extends to the island of Socorro ^. Mr. Anthony 

 (Auk, 1898, p. 311) did not meet with it there or on the other Revillagigedo Islands. 



4. Fhalacrocorax vigua. 



Hydrocorax vigua, Vieill. N. Diet. d'Hist. Nat. viii. p. 90^. 



Phalacrocorax vigua, Ogilvie Grant, Cat. Birds Brit. Mus. xxvi. p. 378^; Salvad. & Festa, Boll. 



Mus. Torino, xiv. no. 339, p. 13 \ 

 Halieus brasilianus, Licht. Preis-Verz. Mex. Vog. p. 3 (1830) * (c/. Cab. J. f. Orn. 1863, p. 59') ; 



Wagler, Isis, 1831, p. 530 \ 

 Carbo brasilianus, Cassin, Pr. Acad. Philad. 1860, p. 197 ^. 

 Phalacrocorax brasilianus, Salv. P. Z. S. 1870, p. 219 " ; Nutting, Pr. U. S. Nat. Mus. vi. pp. 378 ', 



396 " ; Zeledon, An. Mus. Nac. Costa Rica, 1887, p. 132 ". 

 Phalacrocorax sp., B,ichm. Pr. U. S. Nat. Mus. xvi. p. 532 ^°. 



Ptil. cestiv. Supra saturate cinereo-bronzinus, plumis nigro marginatis quasi lanceolatis, tectricibus alarum 

 dorso concoloribus ; dorso postico, uropygio et supracaudaUbus nigris, vis viridi nitentibus ; pileo et collo 

 undique cum corpore subtus toto nigris, vix viridi nitentibus ; primariis et rectrioibus nigris ; cristse 

 elongatse utarinque postocularis plumis albis jSlamentosis ; regione oculari, facie lateral! et coUo laterali 

 plumulis filamentosis albis ornatis ; fascia albida gulam et rictum nudum marginante ; iride saturate 

 caerulea. Long, tota circa 80-0, alsB 11-3, caudae 6-35, culm. 2-2, tarsi 2-2. (Descr. maris adulti ex 

 Chuput, Patagonia. Mus. Brit.) 



Ptil. Mem. ptilosi aestivae similis. Bed sordidior, colli plumulis albis ornamentalibus eisque gulam marginantibus 

 absentibus. (Descr. maris adulti ex Huamachal. Mus. nostr.) 



Juv. Magis brunnescens, notaei plumis sicut iu adultis lanceolatis, dorso postico et uropygio nigris ; pileo colloque 

 toto et corpore subtus brunneis, iUis paullo saturatioribus, bypochondriis nigricantibus ; gula nuda silbo 

 distincte marginata. (Descr. exempl. juv. ex Costa Eica. Mus. nostr.) 



Eah. Noeth Amjieica, Texas ^. — Mexico ( Wagler ^, Deppe & Schiede * ^) ; Guatemala, 

 Lake of Peten, Huamachal {0. S. ^) ; Nicaeagua, Lake of Nicaragua {Richmond ^), 

 San Juan del Sur ®, Ometepe ^^ {Nutting), Rio Frio, Rio Escondido {Richmond ^^) ; 

 Costa Rica {Endres^), Rio Sucio {Zeledon ^^); Panama, Castillo {E. Jrce^). 

 Rio Coconati and Rio Sabana {Festa ^). — Coasts and Lakes op South Ameeica 

 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 



