1895.] ME. r. B. BEDDABD ON DENDBOLAGUS BENNETTI. 131 



the specific validity of the forms respectively so called, as the 

 positions of both need much farther investigation. 



Nor should I even like to say positively that P. africanus is 

 specifically distinct from the large South-Italian Weasels, of which 

 many more specimens will be needed before we can say whether 

 or no they grade into the Maltese representative of the group. 

 Indeed the only points that I can claim to have made out with any 

 certainty are (1) that P. africanus is a genuine African animal, 

 found in Egypt, and (2) that a practically identical form occurs ia 

 Malta. 



4. On the Visceral Anatomy and Brain of Dendrolagus ben- 

 netti. By Frank E. Beddard, M.A., F.R.S., Prosector 

 to the Society. 



[Received January 14, 1895.] 



So far as I am aware the only published account of the visceral 

 anatomy of this genus is a paper by the late Sir Richard Owen ', 

 which, moreover, deals with a different species. It seemed to me 

 therefore to be worth while to put on record such additional facts 

 as I have been able to observe concerning the structure of this 

 aberrant genus. 



Before proceeding to describe the anatomy of the viscera, there 

 are two external characters to which I should like to call attention. 



The first of these relates to the colour of the fur : the shorter 

 and deeper-lying hairs in many parts of the body are of a pink 

 colour, like that which colours the throat of Macropus rubeM. 

 This pmk hue does not a])pear until the fur is ruffled and the 

 deeper hair brought into view. 



As to the second point, I must first refer to a paper by the late 

 Prof. G-arrod " upon Dorcopsis luctuosa. In that paper he described 

 " four large and conspicuous glandular hair-foUicles in the middle 

 line, arranged to form a square," lying in the skin between the 

 jaws. These are figured \ I observed nothing in Dendrolagus of 

 so obvious an appearance as the structures figured by Garrod ; but, 

 when the skin was removed, two small black hair-foUicles were 

 easily visible lying side by side. From the apex of each of these 

 proceeds a hair, which is not any longer than the other hairs upon 

 the throat. I examined a specimen of Petrocjale penicillata, and 

 found that it exactly resembled Dendrolagus bennetti in this respect. 

 "Whether these structures represent in a rudimentary form the 

 large a,nd complicated sternal glands of Myrmeeobius * and Didelphgs 

 dimidiata ° I am unable to say. 



' "Notes on the Anatomy of the Tree-Kangaroo (Dendrolaqus inusius, Gould)," 

 P. Z. S. 1852, p. 103. b \ -^ , h 



^ " On the Kangaroo called Halmaturus luciuosus by d'Albertis, and its Affini- 

 ties," P. Z. S. 1875, p. 48. 3 Loc. cit. pi. viii. 



^ " Note on a Point in the Structure of Myrmeeobius," P. Z. S. 1887, p. 527. 

 = "Note on the Sternal Gland of Bidelphjs dimidiata;' P. Z. S. 1888, p. 353 



9* 



