( 366 ) 

 I propose to call it 



Petrogale rothschildi spec. ikiv. 



Size about us iii P. latendi.t. Fur ratlier shorter aud thiiiuer than in that 

 species. Fur of niij)e reversed forward from withers ; general colour of back 

 dull vinaceous brown (" Mars-brown ") lightening to brownish white (near 

 " ecru-drab ") on the nape. No dark occipital or nuchal stripe. Head dark 

 brown, an ill-defined lilackish streak rnuuing through the e3'e from the sides of 

 the muzzle to the base of the ears. Ear.s wholly dark brown, outside and in. 

 Shoulders with the usual black lateral patch in the axillary region, but without 

 any trace of a whitish patch behind it. Uudersurface dull brownish ; the throat 

 whitish ; the area round pouch bntfy. Arms and legs greyish-brown, becoming 

 slightly rufous on the metapodials and black on the ends of the toes. Tail not 

 very bushy, its basal half greyish brown, its distal half covered with mixed 

 black and white hairs. 



Dimensions of the typical skin : head and body, .lOO mm. ; tail 4.")ii mm. ; 

 hindfoot, isM. 130 mm. ; ear, ;j2 mm. 



Hab. Cossack River, N. of Western Australia. 



Type ¥. No. 157. Collected July 23rd, lOUl, by J. T. Tunney. 



I have named this fine and distinct Rock-Wallaby in honour of the Hon. 

 Walter Rothschild, by whom Mr. Tunney's collecting expedition has been mainly 

 supported, and whose own scientific interest in the Macropodidae is well known. 



P. rothschildi is most nearly related to P. lateralis, but is readily 

 distinguishable by its dark head and uniformly dark ears, the absence of 

 either nuchal dark stripe or whitish flank patch, and by its shorter thinner fur. 



A NEW PORM OF FBOTBOE FROM THE SOLOMON 



ISLANDS. 



By the Hon. WALTER ROTHSCHILD, Ph.D. 



Prothoe ribbei guizonis subsp. nov. 



i ?. Uifl'ers from P. r. ribbei Rothsch., Nov. Zool. ii. p. Kil (1895) (Bougam- 

 ville), especially in the band of the upperside of the forewing, this band having 

 a much more oblique position, standing close to the distal margin behind, aud the 

 spots composing it being generally much reduced, except the last, which is very 

 conspicuous. In some specimens only this last spot is distinct {ti/pc), the discal 

 markings between this spot and the costal margin being partly absent, partly 

 vestigial ; in other specimens there are three large triangular sj)ots R^ — SM^, the 

 series being continued costad by some small dots. Jloreovcr, the subapical spots 

 of the forewing are much more sharply defined than in ribbei ribbei. 



Hab. Guizo I., Solomon Is., end of October and November 19U3 (Messrs. A. S. 

 Meek & Eichhorn). 



A series. 



