108 Mr. W. R. Ogilvic-Grant on 



parts are certainly of a purer white, without the yellowish 

 tinge to be found in the other species. 



The white margins to the inner webs of the outer tail- 

 feathers noticeable in X. minlosi are wanting in S. singularis. 

 On the other hand, the white apical margins to the tertiaries, 

 well represented in the latter bird, are not to be found in 

 X. minlosi or are but slightly indicated. 



Thus we have now two species of Xenerpestes, viz. : — 



1. X. minlosi Berl. Hab. Bucaramanga (Colombia). 



2. X. singularis (Tacz. & Berl.). Hub. Mapoto (Ecuador). 



II. Metopothrix. 



Having lately found in a collection made on the Rio 

 Putumayo, S.E. Colombia, by the late Mr. Gustav Hopke 

 a specimen of Metopothrix aurantiacus Scl. & Salv. (a bird 

 hitherto unknown to me), I have made what I regard to be 

 another important discovery, viz., that this bird is not a 

 Piprine form, as was believed by its describers, but a Den- 

 drocolaptine, closely allied to Xenerpestes, and agreeing with 

 it in general characters of structure, viz., in having the same 

 curved bill, loith prominent swollen tomice at the base of the 

 upper mandible*, and also in exhibiting short stiff frontal 

 feathers, though differing, of course, very much in the style 

 of coloration. 



I think that there can be no longer any question as to Meto- 

 pothrix being removed from the Piprida and placed in the 

 family Dendrocolaptidce not far from Xenerpestes. 



Schloss Berlepsch, November 1902. 



XI. — Additional Remarks on certain Species of American 

 Gallinae. By W. R. Ogilvie-Grant. 



In the July number of the 'Auk' (1902, pp. 309-311) 

 Mr. J. A. Allen has criticized my identifications of certain 

 recently described North-American Game-Birds (cf. Ibis, 

 1902, pp. 233-245). 



* This character is to be found in nearly all Dendrocolaptidce, being 

 especially conspicuous in the species of the genus Synallaxis. 



