MR. OLDFIELD THOMAS ON A ROCK KANGAROO. 17T 



centre only rises to a low blunt point. Lastly, G. g. heringeri 

 has the occipital region very broad, and the lambdoidal crest is 

 quite flat and horizontal to support the fleshy callosity. 



" The remaining two races Gorilla jacobsi Matschie and Gorilla 

 manyema (Alis and Bouvier) are more than doubtful, but the 

 material is too scanty to decide definitely. Matschie and Oscar 

 Neumann have definitely applied the name manyema to the low 

 country Gorilla of the Congo and, as far as I can see, there are 

 no osteological characters to separate this race from the typical 

 Gaboon race ; the two or three adult males examined, however, 

 appear to have the pelage brighter in colour and more sharply 

 contrasted. Of jacobsi only the type male is known, and the 

 extremely sharp facial angle of the skull may be an anomaly. 



" Adult males of the three well-defined races vary in height 

 from 5 ft. to 6 ft., and there is no specimen preserved over 6 ft. 

 in height, but in the 'Illustration' for February 14th, 1920, 

 p. 129, is a photograph of a gorilla 9 ft. 4 in. in height, according 

 to M. Yillars-Darasse, and the photograph certainly shows a 

 gigantic animal. This individual is said to have been killed in 

 the Forest of Bambio, Haute-Lobaze." 



Mr. Oldfield Thomas exhibited a new Eock-Kangaroo 

 {Petrogule) which had been obtained in Northern Queensland by 

 Mr. T. Sherrin, the collector employed on behalf of the Godman 

 Exj)loration Trustees, by whom it had been presented to the 

 National Museum. It was described as follows : — 



Petrogale godmani, Thos.* 



General characters about as in P. assimilis Eamsay, of which 

 a fine series from Inkerman, N. Queensland, was available for 

 comparison. Black axillary patch less extensive. Forearms 

 more strongly bufiy. Tail, instead of being black for its terminal 

 third or half, drabby whitish, its basal fourth only grizzled with 

 black, the rest dull whitish to the end. In a young specimen 

 there was an indication of the upper side being darker-, though 

 not so dark as in assimilis, but in the adult even this was absent. 



Skull of the same length as that of assimilis, but it was more 

 convex in the frontal region, and the nasals were decidedly 

 broader and heavier, especially anteriorly, where they had not' 

 the marked narrowing found in assimilis. Teeth as in assimilis 

 except that the secater was larger, 7-8 mm. in length as com- 

 pared to a nearly uniform length of about 6-7 mm. in six 

 specinaens of assimilis. 



Dimensions of the type, measured in flesh : — 



Head and body 465 mm. ; tail 502 ; hind foot 140 ; ear 59. 



Skull, greatest length 101 ; condylo- basal length 92 ; zygo- 

 matic breadth 52 ; nasals, length 41, anterior breadth 8-5, 

 posterior breadth 14-5; teeth, length of i^ 4, secator 7*8 

 ms.^~'^ 19. 



* Abstr. P.Z.S. 1923, No. 235, p. 13. 



P^oc. ZooL. Soc— 1923, No. XII. 12 



