Mexico^ Central America, and South America. 17 



Under the circumstances I consider the name conferred a 

 very appropriate one. 



15. Zesiaicliira gray§oni, Baiid, M. S. 



Male. Entire plumage above oliyaceous-brown, with a rufescent 

 tinge, the crown of a darker brown ; front, sides of the head, and the 

 whole iinder-plumage dai'k cinlaamon I'ed, except the chin, which is 

 paler ; auricular spot black, but not very distinct ; the sides under 

 the wings grayish-plumbeous ; the two central tail feathers are of the 

 same color as the back, with their centres blackish-plumbeous ; the 

 next feather on each side has the outer web and end colored like the 

 back, with a rather indistinct subterminal black bar on the inner 

 web, below wliich the inner web is dark plumbeous, the next pair on 

 each side are grayish-plumbeous, the outer webs broadly margined and 

 tipped with brown, and having the subterminal black bar more 

 distinct, the next two on each side of a ligJit plumbeous-gray, just 

 margined with brown on the outer webs, and with the black bars still 

 darker, the outer feather has its end and the outer web pale bluish- 

 white, the inner web dark plumbeous, the black spot mostly confined 

 to the inner web ; the tail feathers underneath are brownish-black, 

 except the outer web of the lateral one, the end of which and those of 

 the next two are light plumbeous, the ends of the others becoming 

 darker towards the central ones, and more or less tinged with b^own ; 

 primary and secondary quills blackish-brown, the outer primaries just 

 edged with white ; wing coverts and tertiaries of a rather lighter 

 reddish-brown than the back, and mai'ked with oval black spots, 

 most conspicuous on the tertiaries ; under wing coverts grayish- 

 plumbeous ; bill dark brown, base of under mandible yellowish ; feet 

 reddish. 



Length (fresh) 12 in.; wing 5J; tail 5; bill i|; tarsi 1. 



Habitat. Socorro Island, Mexico. Collected by Col. A. 

 J. Graj'son. Type in Museum Smithsonian Institution, No. 

 50855. 



There is no difference in the phimage of the sexes. Tliree 

 specimens are in the collection, one of which is rather more oli- 

 vaceous on the back ; otherwise all are alike. 



FEBKUARY, 1871. 2 AUK. Lyc. NAT. HiST., VOL. X. 



