AVES PODICIPEDID^E. 71 



Podicipes calipareus, Lane, Ibis, 1897, p. 313 (Lake Huasco); Grant, Cat. 

 B. Brit. Mus. XXVI. p. 536 (1898); Sharpe, Hand-List B. I. p. 114 



(1899). 



GENERAL DESCRIPTION. 



Size. Total length, about 10.5 inches. 



Culmen (from feathers on forehead), 0.75 to 0.80 inches. 



Wing, 5.2 to 5.5 inches. 



Tarsus, 1.65 inches. 



Color (adults in breeding plumage). General color above dark slaty 

 grey ; lower parts glossy white, with the sides and flanks shaded with dark 

 slate color. 



Head : Forehead and crown grey mouse-brown, occiput deep black. 

 The superciliary feathers, the cheeks and the ear coverts dull golden straw 



FIG. 36. FIG. 37. FIG. 38. 



Podicipes calipareus. Profile Podicipes calipareus. De- Podicipes calipareus. Profile 



of head and neck. Adult male, tail of foot. % natural of head and neck. Adult female. 



P. U. O. C. 8829. y^ natural size. j natural size, 

 size. 



color, all having together with the feathers of the crown, hair-like filaments 

 or tips which form a ruff-like hood. 



Neck : Above deep black shading into lead or slate on the sides and 

 being pure white below, except on the chin and throat which are like 

 the sides of face and top of head, light mouse-brown, forming the char- 

 acteristic grebe hood. 



Back : Dark slate grey. 



Wings : The upper coverts are like the back in color. The primary 

 quills are brownish grey, the inner five or six being margined with white 

 at the tips. The secondaries are white, with the outer webs partly mar- 



