106 Chapman, Proposed New Race of the Killdeer. [j" n 



Oxyechus vociferus peruvianus new subspecies. 



Subsp. Char. — Smaller than Oxyechus vociferus vociferus, agreeing in siie 

 with the West Indian Oxyechus vociferus rubidus, but in post-nuptial 

 plumage differing from them both in the greater extent of the rusty margins 

 of the plumage of the upperparts and, particularly, of the lesser and median 

 wing-coverts. 



Type. — No. 163,083, Am. Mus. Nat. Hist., <? ad. (fresh post-nuptial 

 plumage, the outer primary of the nuptial plumage still present), Paletillas, 

 alt. 1550 ft., northeast of Payta, Prov. Piura, Peru, June 22, 1919; H. 

 Watkins. 



Description of Type. — Similar in color to Oxyechus vociferus vociferus 

 but all the brown feathers of the plumage, including crown, nape, back, 

 scapulars, tertials, etc. margined with rusty or ochraceous; exposed por- 

 tions of lesser and median wing-coverts rusty. Wing, 160; tail, 91; 

 tarsus, 31.5; exposed culmen, 19 mm. 



Description of fresh Juvenal Plumage. — 9 juv., Bequeta, near Lima, Peru, 

 Jan. 22, 19T9. Similar to corresponding plumage of Oxyechus vociferus 

 vociferus. 



Description of Natal Doivn. — (Two specimens not more than four days 

 old, Paletillas, Peru, June 22, 1919). Similar to corresponding plumage 

 of Oxyechus vociferus vociferus. 



Specimens examined. — Oxyechus vociferus peruvianus. Peru: Paletillas, 

 Piura, 1 & ad., 2 pull. (June 22, 1919); Samate, Piura, 2 c? <? ads. (May 

 30, 1919); Chilaco, Piura, 1 d 1 ad., 1 9 ad. (May 27-25); Pilares, Piura, 

 1 <? ad., 1 9 ad. (June 16, 1919); Bequeta, Prov. Lima, 2 & & ads., 2 9 9 

 ads., 1 9 juv. (Jan. 22-24, 1919). 



Oxyechus vociferus rubidus. West Indies: (Cuba, Haiti, Jamaica, Porto 

 Rico, Grenada), 18 adults representing both sexes and every month but 

 August. 



Oxyechus vociferus vociferus. A large series from throughout the United 

 States, taken in every month and representing all plumages. 



Remarks. — The seven adult specimens on which this proposed 

 race is chiefly based, were taken in the Province of Piura from May 

 25 to June 22. All are essentially in the same stage of plumage, 

 having just completed, or nearly completed, the post-nuptial molt, 

 all but one still having the outer one or two primaries of the nup- 

 tial plumage. The series shows little variation in color all having 

 the upperparts strongly margined with rusty, as in the type. These 

 birds are comparable with August and September specimens from 

 the eastern United States. The latter often have the upper parts 



