Ornithology of the 'Magenta^ Voyage. 185 



Of the distinctness of this specieSj which Dr. Jerdon was the 

 first to suspect^ having picked out a pecuharly small specimen 

 in Mr. Brooks's collection as not, in his opinion, referable to 

 P. raina, there can be no doubt. Mr. Brooks and I have worked 

 the matter out with more than sixty specimens of the new 

 species and a large series of P. rama before us ; and that gentle- 

 man (who himself procured all these specimens, some of which 

 we have had in the flesh before us while writing the above de- 

 scriptions) has personally observed its habits and haunts. In 

 general appearance, at one season of the year, as has been said, 

 it much resembles P. rama ; but in its habits, notes, and even 

 change of tone of colour at different seasons it far more closely 

 approximates to Acrocephalus. It forms, indeed, in our opinion, 

 a sufficiently well marked intermediate type demanding the 

 generic separation we have accorded to it. 



^ 



XIII. — On some other new and lit tie -known Birds, collected during 

 the Voyage round the World in 1865-68 of H. I. M.'s S. 

 Magenta. By Henry Hillyer Giglioli, Sc.D., C.M.Z.S., 

 and Thomas Salvadori, M.D., C.M.Z.S.* 



1. A-CRIDOTHERES LEUCOCEPHALUS. 



A. capite collo ac uropygio alhis, dorso nigro-schistaceo, alis 

 brunneis, subtus albo-rubescens. 



Head and neck white, the feathers on the top of the head ra- 

 ther lengthened and pointed, a large naked space of a dark 

 reddish colour around the eyes; back of a dark slate-black, 

 rump and upper tail-coverts (except the posterior ones, which 

 are black) of a pure white ; wings of a silky brown as in 

 A. tristis, the spurious wing, carpal region, under wing-co- 

 verts and the basal portion of the primaries white ; a partial 

 collar bordering the base of the posterior part of the neck, 

 the breast and abdomen reddish-white, nearly rosy, tinged on 

 the sides with greyish, the mesial abdominal region being of 



* Other new species of birds collected during the same voyage were 

 described by the same authors in * The Ibis ' for 1869, pp. 61-68, and in 

 the ' Atti deUa Societa Italiana di Scienze Naturali,' vol. xi. pt. iii. 

 (1868). 



