270 PATAGONIAN EXPEDITIONS : ZOOLOGY 



The British Museum has received examples from Lake Blanco, Chubut, 

 collected by J. Koslowsky, durin<^ the months of September, October and 

 November. 



H.'EMATOPUS DURNFORDI SharpC. 



HcEuiatopiis palliafiis, Darwin (nee Temm), Voy. "Beagle" Birds, p. 128 

 (1841 : Rio de La Plata); Durnf. Ibis, 1878, p. 403 (Tambo Point, 

 mouth of Chupat river, Dec, breeding); Scl. & Huds. Argent. Orn. 

 II. p. 176 (1889). 



Hmnatopits diinifordi, Sharpe, Cat. B. Brit. Mus. XXIV. p. 117, pi. VI. 

 (1896: Patagonia); id. Hand-list B. I. p. 147 (1899); Martens, 

 Hamb. Magalh. Sammelr. Vog. p. 14 (1900: Patagonia). 



General description. 



Size. — Adult. Total length, 16 inches. 



Wing, 9.7 inches. 



Culmen, 2.55 inches. 



Tail, 3.6 inches. 



Tarsus, 1.9 inches. 



Color. — Adult. General color above chocolate brown on body, chang- 

 ing abruptly into black on the neck, which color is continuous to the bill. 

 Below, black from the bill to the chest, then abruptly white, which color 

 prevails on the rest of the lower surface, except on the under tail coverts 

 which are blackish brown. 



Head entirely black. No white below eye. Neck entirely black. 



Back, mantle, lower back, rump and upper tail coverts chocolate brown. 



Tail blackish brown without prominent bases of white to any of the 

 feathers. 



Wings : The white area on the iving comparatively small. None of the 

 primaries white shafted or with white areas on the webs. The greater 

 coverts tipped with white, this forming only a narrow band on the closed 

 wing. All the secondaries have some black and most of them a great 

 deal of that color at their ends on the outer webs. 



Lower parts : Black from the bill backward to the chest. Then ab- 

 ruptly white to the under tail coverts, which are mostly shaded heavily 

 with blackish brown. 



"Bill dark pink; legs and feet greenish yellow; iris light orange" 

 (H. Durnford). 



