Descriptions of Nero Species of American Birds. 419 



is black in the new species, and yellow in the other ; the tail is 

 immaculate, and the only white on the wing, is a spot at the 

 base of the primaries ; chrysogaster has large white patches on 

 the tail-feathers; and the ends of the wing coverts, of the sec- 

 ondaries and of the tertiaries, are largely marked with white. 



17. SpermopMla atricepsi Band, MS. 



" Male. Head above and at the sides, upper part of back, with a 

 pectoral collar, black ; middle part of back, upper tail coverts and 

 exposed portion of wings and outer edges of tail, grayish brown, 

 with a tinge of olive; lower back and rump, with the under parts 

 (interrupted by the black collar) light cinnamon brown, chin and 

 throat paler ; sides of the neck white, almost meeting behind and 

 confluent with the color of the throat ; primaries, except the outer 

 three, white at the base, forming a speculum, and edged with ashy 

 gray ; inside of wing white ; iris browm ; bill and legs blackish. 



" Length 4.50 ; wing 2.15 ; tail 2 ; tarsus .60. 



"Habitat, — Mexico, Mazatlan. Collected by Col. A. J. 

 Grayson. No. of type, 34,035. 



"The black of the head extends on the nape and on the upper 

 part of the back, behind the line of the white interrupted neck 

 collar, and is continuous with the black pectoral band, this is 

 much widened on the sides of the breast, but narrow 7 in front ; 

 the quills and tail-feathers are dark brown, edged as described ; 

 the speculum is the only white on the w r ing. 



"The female is uniformly light brownish olive above, 

 yellowish cinnamon beneath, the middle of the belly lighter ; 

 the breast tinged with olive ; the white speculum barely 

 appreciable. 



"This species has much resemblance to S. torqueola, in this 

 however the w T hole back, as well as the wings and tail, is 

 black, the latter with no edging except an almost unappre- 



