300 Dr. M. Meuzbier on new or 



Trochalopteron prjevalskii, sp. nov. 



Trochalopteron ellioti, Prjev. " Mongolia and the Tangut 

 Country'' (in Russ.), p. 66 (1876). 



Troch. ellioti similis, seel major, rostro validiore, colore toto 

 brunneo-grisescente, capite pallidiore, alarum colore 

 cinerascente nee ferrugineo praedominante, rectricibus 

 duabus mediauis cinereis, albo terminatis. 



Dimensions. ^ : wing 103 millim., tail 130, bill 9, tarsus 

 35 ; ? : wing 98, tail 125, bill 9, tarsus 33. 



Description. Legs and feet flesh-coloured ; bill black. 

 Plumage above greyish brown, under surface of the body 

 clear brown. The top and back of the head and back of the 

 neck whitish brown ; upper back, scapulars, and wing-coverts 

 greyish brown, each feather of the back and scapulars tipped 

 on a brown ground with whitish ; lower back and upper tail- 

 coverts brownish grey. Lores dark brown ; ear-coverts 

 brown. Sides of the neck, chin, and throat clear brown 

 each feather margined on the top with greyish white ; breast 

 reddish brown, flanks greyish brown, abdomen rufous, under 

 tail- coverts ferruginous. Quills brownish black, with a fer- 

 ruginous patch on the basal half of the outer webs ; primaries 

 conspicuously margined on the outer webs with bluish 

 grey, secondaries and tertiaries gradually passing into slaty 

 grey. Tail slaty brown, each feather broadly tipped with 

 white ; two middle tail-feathers slaty grey throughout their 

 length, the other washed with ferruginous on the basal half 

 of the outer webs, two exterior excepted. 



Female similar to the male (specimens in our collections in 

 rather worn plumage) . 



This species was discovered by General Prjevalsky ia the 

 mountains of Kan-sou, and I am pleased to propose its 

 specific name in honour of the famous traveller. My 

 description is based upon the two specimens from Gen. 

 Prjevalsky's collection ( J ? ) obtained in May in Kan- 

 sou, and now preserved in Mr. Severtzow's ornithological 

 collection. Two typical specimens of Trochalopteron ellioti, 

 obtained by Pere David, are before us for a comparison with 

 its nearest allv. 



