138 Descy'ijptions of three New Species 



possibly be erroneous, and that, perhaps, it was one of the 

 stout, darkly-colored South American forms of that genus, but 

 on investigation, failing to make it agree with any of them, I 

 consider it undescribed, and for the present, Mexico must be 

 received as its habitat. 



It is related to the South American group repi'esented by 

 M. thenca^ M. lo7igicaudatus, etc. ; in coloring it somewhat re- 

 sembles the last-named species, but is darker, with a much 

 stronger bill ; the toes and claws are longer and much stouter, 

 those of longlGaudatus being comparatively quite feeble ; the 

 ashy coloring on the breast is much darker, and the abdomen 

 clearer in color, the under tail coverts are colored like the 

 abdomen, whereas those of longicaudatus are of a light reddish- 

 brown ; the black lores and the basal half of the under mandi- 

 ble being yellowish-white, are distinguishing characters. 



The uppei' plumage in the new species is of a smoky brown, 

 that of longicaudatus is lighter and more of an ochreous color, 

 in thenca the back is ashy, and the rump with a rufescent 

 tinge, the latter species is much lighter below than the others, 

 the breast having an ash}^ suffusion, and the under tail coverts 

 being pale fulvous. 



S. BiiarreBnon isordidus. 



A broad stripe of light reddisli-ochreoiis extends over the front, 

 crown, and hind neck, the feathers of the front have their centres 

 dusky ; sides of the head black ; back and wing coverts of a dull 

 greenish olive-brown, tinged with ochreovis ; the tail feathers are 

 black and the wings brownish-black, both with margins the color of 

 the back ; the throat is dull light yellow, with a narrow line of dusky 

 feathers extending down from the lower mandible on each side, the 

 feathers of the breast and of the abdomen are of a soiled yellowish- 

 olive, with narrow dusky-brown shaft stripes, sides colored like the 

 the back, but with rather more of an ochreous tinge ; bill blackish- 

 brown, with the cutting edges and the lower part of the under 

 mandible pale brown ; tarsi and toes light fleshy -brown. 



