JOG HanSj Graf von Berlepsch on the 



soni, sent by Colonel G. Rippon, the specific distinctness of 

 G. davisoni has been fully established. 



The type specimen was procured to the north-cast of 

 Bhamo, and we know nothing more about the distribution 

 of this species. The female is unknown. 



The male has the hind-neck, mantle, back, wing- coverts, 

 and scapulars black, each feather rather finely marked with 

 zigzag white lines parallel to the margins of the webs, 

 and each pair of such lines forming a spoon-shaped pattern. 

 The rump and upper tail-coverts are black, with more or less 

 transverse zigzag vermiculations, while each feather is fringed 

 with white, the first vermiculation and the white fringe being 

 separated by a black band. The lower plumage is entirely 

 black. The middle tail-feathers are black, with white lines 

 parallel to the shaft ; the three outer pairs arc almost entirely 

 black, and the intermediate pairs are progressively less marked 

 with white lines than the middle feathers. The wings are 

 black obliquely barred with white. The wing measures 9'5 

 inches; the tail about 11 inches. 



X. — On the Genera Xenerpestes and Metopothrix. 

 By Hans, Graf von 13erlepscii. 



I. Xenerpestes. 



In a third article on the birds collected by Mr. J. Stolz- 

 mann in Ecuador, published in the ' Proceedings of the 

 Zoological Society' for 1885, the late Dr. L. Taczanowski, 

 in concert with me, has described and figured a curious 

 bird under the name of Synallaxis singularis *. 



Unfortunately my friend Taczanowski did not at that time 

 send me the bird itself for examination, but merely a descrip- 

 tion of it, from which I satisfied myself that it belonged to 

 an undescribed species quite unknown to me. Taczanowski 

 placed it in the genus Synallaxis, admitting at the same 

 time that it was an abnormal species of that genus. 



Through the kindness of Mr. Stolzmann, I have lately 



* Tacz. & Berl. P. Z. S. 1885, p. 96, pi. vii. fig. 2. 



