5IO PATAGONIAN EXPEDITIONS I ZOOLOGY. 



Phalacrocorax mgua, Ridgw. Proc. U. S. Nat. Mus. xii. p. 138 (1889: 



Port Otway, Chili); Grant, Cat. B. Brit. Mus. xxvi. p. 378 (1898); 



Sharpe, Hand-list B. I. p. 233 (1890); Martens, Hamb. Magalh. 



Sammelr. Vog. p. 22 (1900); Salvad. Ann. Mus. Genov. (2) xx. p. 



627 (1900: Isla de Leones, Santa Cruz, Jan.). 

 Phalacrocoyax sp. Holland, Ibis, 1892, p. 204 (Estancia Espartilla), 1897, 



p. 168. 

 Falacrocorax brasiliensis, Carbajal, La Patagonia, part H. p. 277 (1899). 



General description. 



Size. — Adult male, P. U. O. C. 8995, October, 1897, Province of Buenos 

 Aires. From the Museo de La Plata, Original Number, 51. 



Total length, about 30.00 inches. 



Wing, I I.I inches. 



Culmen, 2.25 inches. 



Tail, 7.0 inches. 



Tarsus, 2.0 inches. 



The adult female is appreciably smaller than the adult male but ident- 

 ical in color and decoration in the breeding season. 



Color. — General color: Shining glossy black with a slight greenish 

 tint. 



Head : Black ; in the breeding season a tuft of decomposed whitish 

 plumules on each side above the ear. There is also a line of similar 

 feathers forming an irregular supraciliary stripe from the lores back. 



Neck : Black ; a narrow white band defines the upper feathering of the 

 throat where it borders the naked skin of the pouch ; this marking reaches 

 up in some specimens almost to the eye ; the sides of the neck are deco- 

 rated with scattered whitish plumules in the breeding season. The gular 

 pouch is dusky yellowish in color. 



Back: The middle and lower back, the rump and upper tail-coverts 

 glossy black ; the upper back has distinct lanceolate feathers of an ashy 

 shade, each one margined or bordered with black ; some of these feathers 

 have a median black line along the shaft. 



Tail : Dull black. There are twelve rectrices. 



Wings : The quills are brownish black ; on the exposed surfaces of the 

 secondaries and tertials this color is obscured by a heavy shading of ash ; 

 the scapulars are like the feathers of the upper back, lanceolate in shape, 



