384 Mr. Ct. N. Lawrence on new American Birds. 



that tlie true position has been assigned to it"'^ : it is larger 

 than all other species of Chlorospingus ; but the bill agrees 

 closely in form with those of some members of the genus, 

 especially that of C. flavigularis. 



Chlorospingus nigrifrons. 



Front, lores, and sides of the head black ; the feathers of 

 the crown and occiput are yellowish green, with blackish 

 centres ; a white stripe extends from the bill, over the eye, and 

 along the crown as far as upon a line with the hind neck ; 

 there is also a white mai-k upon the lower eyelid ; upper plu- 

 mage with the smaller and middle wing-coverts yellowish 

 green, the larger wing-coverts have their inner webs black, 

 their outer gi-eenish yellow ; quills and tail-feathers blackish 

 brown, with their outer margins the colour of the back ; 

 spurious wing brownish black ; entire under plumage bright 

 yellow ; under wing-coverts of a paler yellow ; inner margins 

 of quills white ; upper mandible black, the under brownish 

 horn-colour; tarsi and toes dark brown. 



Length 5 inches, wing 2|, tail 2f, bill -^, tarsi |. 



Hub. Ecuador. 



Closely allied to C. superciliaris, from which it differs in 

 having the forehead and crown blackish instead of grey. 



Serpophaga leucura. Plate IX. fig. 2. 



Crown dusky cinereous; hind neck and back brownish 

 olive, with a greenish wash on the the lower back and rump ; 

 outer three tail-feathers white, the outermost entirely of that 

 colour, the next with the outer margin of the outer web pale 

 brown for its terminal half, the third has the entire outer web 

 pale brown ; the other tail-feathers are light slaty brown, some 

 of them tipped with white ; wings blackish brown, the outer 

 primaries margined with white, the inner, with the secondaries 

 and tertiaries, have bright rufous margins, and their ends 

 bordered with white ; the smaller wing-coverts are coloured 

 like the back, the middle and greater coverts are black, broadly 

 ending with pale rufous- white, forming two bars across the 

 wings; spurious wing black ; the under wing-coverts are very 

 • [A new genus should, we think, be made to receive this bird. — El).] 



