Wetmore and Peters — New Genus and Subspecies of Birds. 45 



the coverts; greater wing-coverts fuscous-black, margined externally with 

 drab, this color shading distally to dull pinkish buff, the outer web at tip 

 white, forming a wing band; median wing-coverts fuscous-black, tipped 

 with white, forming a second wing band; lesser wing-coverts dull drab; 

 rectrices dull fuscous, the outer ones margined lightly on outer web with 

 tilleul buff; throat and foreneck white; a spot on either side of foreneck (at 

 end of rufescent half collar) black; upper breast and sides paler than drab- 

 gray with a slight buffy wash; lower breast and abdomen white, the 

 abdomen with a wash of buff; under tail-coverts white; flanks paler than 

 light drab; under wing-coverts dull whitish, mixed slightly with fuscous 

 over metacarpal; bend of wing white. Bill darker than fuscous, nearly 

 black at base; tarsus between natal brown and bone brown; feet blackish. 

 (From dried skin.) 



Measurements (in millimeters). — Males, 2 specimens, 77.2-78.2' (77.7), 

 tail 59.2-6O.51 (59.8), culmen 12.0'-12.2 (12.1), tarsus 21.3'-22.5 (21.9). 

 Females, 5 specimens, wing 73.3-79.8 (76.1), tail 58.2-67.5 (62.1), culmen 

 11.2-11.7 (11.2), tarsus 21.0-21.5 (21.3). 



Range. — Northern Rio Negro (General Roca, breeding), and southern 

 Pampa (Rio Colorado, August) north to the plains of north central Men- 

 doza (Tunuydn, March; Mendoza, March and June). 



Remarks. — Though direct comparison of this form has been made with 

 Brachyspiza c. chilensis, a subspecies that it resembles closely, this resem- 

 blance would seem to be more or less superficial since the bird here described 

 is intermediate between Brachyspiza c. argentina of the eastern pampas 

 and B. c. canicapilla of Patagonia. To the westward it intergrades with 

 chilensis as specimens from Tunuydn and Mendoza are not typical. As 

 in most other forms from this region the exact range of B. c. choraules 

 remains to be established. 



Saltator aurantiirostris nasica,^ subsp. nov. 



Characters. — Similar to Saltator aurantiirostris aurantiirostris Vieillot, 

 but bill longer, larger and heavier. 



Description. — Type, Museum of Comparative Zoology, Cat. No. 85819, 

 adult female, from PotrerUlos (El Sal to, altitude 6,000 feet), Province of 

 Mendoza, Argentina, collected March 19, 1921, by James L. Peters (orig. 

 No. 4127). Specimen in worn breeding plumage. Entire upperparts. 

 including wing coverts and tail-coverts between deep grayish olive and dark 

 grayish olive; lores, orbital ring, auricular region and sides of throat dull 

 blackish; a superciliary stripe of light buff terminates in a patch of the same 

 color on the side of the neck; throat light buff to light ochraceous buff, 

 enclosed by a narrow blackish collar; breast light grayish olive shading into 

 warm buff on the abdomen; flanks and under tail-coverts brighter, the 

 latter paler, the former more or less washed with gray; wings between hair 

 brown and chaetura drab ; tail blackish brown becoming paler towards the 

 tip. 



iType specimen. 



2The Latin word nasica, ae is of common gender. 



