BIRDS OF SOUTHERN VERACRUZ — WETMORE 231 



Seven females, wing 87.5-94.0 (90.3), 6 culmen from base 19.0-21.3 

 (20.3), tarsus 28.5-32.1 (30.5) mm. 



Cuba, Jamaica, Isle of Pines, Hispaniola, Puerto Rico, and many 

 of the Bahama Islands; Cozumel Island. 



Eight skins in the British Museum from Cozumel Island on the 

 eastern coast of Yucatan agree with the Greater Antillean birds in 

 darker flanks and sides and in the greater amount of fuscous on the 

 breast. It is well known that Cozumel has definite Greater Antillean 

 affinities in many elements of its avifauna. 



Colymbus dominions brachypterus Chapman : 



Colymbus dominicus brachypterus Chapman, Bull. Ainer. Mus. Nat. Hist., vol. 

 12, Dec. 23, 1S99, p. 25G (Lomita Ranch, Lower Rio Grande Valley, Tex.). 



Under surface whiter, with the sides and flanks lighter, less fus- 

 cous ; wing and bill averaging slightly shorter. 



Sixteen males, wing 82.0-93.7 (88.7), culmen from base 18.0-24.7 

 (21.5), tarsus 29.4-33.8 (32.4) mm. 



Eighteen females, wing 83.8-91.5 (87.4), culmen from base 18.0- 

 22.6 (19.8), 7 tarsus 29.3-32.5 (30.9) mm. 



Southeastern Texas through Mexico and Central America to 

 Panama. 



Another form has been described from Baja California by van 

 Rossem and Hachisuka as Colymbus dominicus bangsi 8 and as differ- 

 ing from G. d. brachypterus in smaller bill, grayer and paler upper 

 parts, with the breeding plumage darker below, and spotting promi- 

 nent. The proposed form is said to range in the arid tropical zone 

 of Baja California, southern Sonora, and "probably other portions 

 of northwestern Mexico." I have seen only two specimens from 

 Baja California, a male with the culmen from base 19.4 mm. and a 

 female with the same measurement 17.6 mm. While small, this is not 

 remarkably so. In color these two do not differ from specimens from 

 elsewhere in Mexico. Skins from Rosario in the State of Sinaloa, 

 Mazatlan, Nayarit, and Manzanillo in Colima do not differ at all from 

 typical brachypterus. In view of the data given above, I wish to 

 withhold decision as to the validity of bangsi for the present, though it 

 would seem that it is doubtfully distinct. 



Colymbus dominicus speciosus (Lynch Arribalzaga) : 



Podiceps speciosus Felix Lynch Arribalzaga, La Ley, Buenos Aires, July 2, 

 1877, p. 1 (Baradero, Buenos Aires, Argentina). 



9 Five specimens ; other two molting. 



7 Measurements of 16 specimens. 



8 Colymbus dominicus bangsi van Rossem and Hachisuka, Trans. San Diego Soc. Nat. 

 Hist., vol. 8, June 15, 1937, p. 323 (Santiago, Baja California). 



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