1917.] Chapman, Distnhulion of Bird-Jife in Colombia. 221 



Obdee PODICIPEDIFORMES. 

 Family PODICIPEDIDyE. Grebes. 



(268) Colymbus dominicus brachyrhynchus Chapm. 



Colymbus dominicus brachyrhynchus Ch.\pm., Bull. A. M, N. H., XII, 1899, p. 255 

 (Matto Grosso, Brazil). 



Tachybapterus dominicus ScL. & Salv., P. Z. S., 1879, p. 548 (Antioquia; breed- 

 ing). 



An unsexed specimen from Popayan and a male from Cali. The latter 

 measures, wing, 91; culmen, 19 mm., and in length of wing therefore is in- 

 termediate between brachyrhynchus and hrachypterus, but in size of bill and 

 color it agrees with hrachyrhynchus. 



Cali, 1; Popayan, 1. 



(276) Podilymbus podiceps {Linn.). 

 Colymbus podiceps Linn., Syst. Nat., I, 1758, p. 136 (Carolina). 



A pair of birds (of which the female was laying) taken at Cali, May 10, 

 agree in size with North American examples but are much more fuscous 

 above, and grayer below. The difference in the underparts resembles that 

 which exists between Colymbus d. hrachypterus and C. d. brachyrhynchus, 

 and is apparently not due to seasonal variation or wear. The Cauca birds 

 doubtless represent a resident race. They measure, male (Fuertes Coll.), 

 wing, 133; tarsus, 39, culmen, 24; depth of bill at nostril, 12; female, wing, 

 119; tarsus, 36; culmen, 20.5; depth of bill at nostril, 11. 



A downy chick but a few days old was taken by Gonzalez at La Herrera 

 in the Bogota Savanna, May 13, 1913. 



Cali, 2; La Herrera, 1. 



Oeder LARIFORMES. 



Family LARIDiE. Skimmers, Gulls, Skuas. 



(319) Phaetusa chloropoda ( VieilL). 



Sterna chloropoda Vieill., N. Diet. d'Hist. Nat., XXXII, 1819, p. 171 (Para- 

 guay). 



