151 



Hab. Interior of New South Wales. 

 Males are much smaller. 



Mr. Gould also exhibited at this Meeting certain specimens of 

 Dasyurus. The D. Maugei and D. viverrimis of authors, he stated, 

 were the same species, a fact which he ascertained by finding in the 

 same litter both the black and grey varieties : he then proceeded to 

 point out the characters of a new species of Dasyurus, which he pro- 

 posed to name 



Dasyurus Geoffroii. Das. fuscus, flavo lavatus ; caudd elongatd, 

 dimidio apicali nigro ; corpore suhtus albescente, supra et ad latera 

 albo maculato ; pedibus posticis halluce parvo instructis. 



unc. liii. 

 Longitude ab apice rostri ad caudae basin. ... 15 



Cauda 11 6 



tarsi digitorumque 2 6 



— — ab apice rostri ad basin auris 2 7 



auris 1 2 



Hab. Liverpool Plains. 



Like the D. inacroura, the present species possesses a small thumb 

 to the hind foot, a character which serves to distinguish these spe- 

 cies from the D. Maugei. The D. Geoffroii is intermediate in its 

 colouring between the D. Maugei of Geoffroy and the D. inacroura ; 

 it resembles the latter in having a long and not very bushy tail, but 

 is distinguishable by there being no spots on this part : the white 

 spots on the head and body are smaller than in either of the species 

 mentioned. 



A small Rodent, supposed to be identical with the Dipus Mitchellii, 

 was exhibited by Mr. Gould, as well as a skin and skeleton of the 

 Hapalotis albipes of Lichtenstein. 



Mr. Ogilby, referring to his paper on these two animals in the 

 18th volume of the Transactions of the Linnsean Society, pointed out 

 the general conformity of reasoning there adduced in support of the 

 rank and affinities of the latter species with the characters of the 

 specimen exhibited by Mr. Gould. The dentition and structure of 

 the skull, indeed, approach more nearly to that of the typical Rats 

 (and closely agrees with Hapalotis) than the Jerboas ; but the animal 

 is a true Rodent, and from the conformation of the extremities and 

 other influential external organs, appears, as there stated, to repre- 

 sent in Austraha the Jerboas and Gerbilles of the Old World. 



The eyes are apparently rather large ; the ears are very large, 

 broad at the base, and somewhat attenuated at the apex ; the fore- 

 legs are proportionately small ; the fore-feet are furnished with four 

 toes, and a rudimentary inner toe having a small rounded nail ; the 

 hind-legs and tarsi are long ; there are five toes to the feet, of which 

 the three central ones are very long ; the outer and inner toes are 

 small, especially the latter ; the metatarsal bones are evidently not 

 consolidated, as in the Jerboas : the tail exceeds the head and body 



D 



