Zoological Society. 399 



provided with subulated nails ; the singular form of its teeth, and, 

 above all, the analogy which its skull bears with that of the Mono- 

 delph Edentata and Monotremata, render it difficult to determine 

 the rank which the Tarsipes ought to occupy among the Syn- 

 dactylous Marsupialia. It may be observed that it makes a con- 

 siderable approach to Myrmecobius, an animal which, in some re- 

 spects, has likewise affinities with the Edentata ; but here the feet 

 nearly resemble those of the Dasyuri. The Tarsipes in all proba- 

 bility had a long tongue, as in the Echidna and the Myrmecophaga ; 

 and it appears, according to the observations made by Lieutenant 

 Dale and Mr. Gilbert, and communicated to M. Gervais by Mr. 

 Waterhouse, that the tongue of the Myrmecobius is also very long. 



Mr. Gould exhibited a new species of Petrogale, which he charac- 

 terized as follows : — 



Petrogale inornata. Petr. facie et dorso arenaceo-cinereis ; 

 humeris canescente irroratis, lateribus pallidioribus absque notis 

 conspicuis ; antibrachiis tarsisque arenaceo-cinereis digitis ad api- 

 cem saturate fuscis ; caudd dimidid basali arenaceo-fuscd. 

 Hab. North coast of Australia. 



General colour of the upper parts sandy grey, grizzled over the 

 shoulders, and becoming much lighter on the flanks ; an indistinct 

 line, of a lighter hue, along the face under the eye ; a dusky red 

 patch behind the elbow ; under surface sandy white, inclining to 

 rufous on the lower part of the abdomen ; arms and tarsi sandy grey, 

 passing into dark brown at the extreme tips of the toes ; basal half 

 of the tail sandy brown, the remainder black, the former colour ex- 

 tending along the sides of the tail for some distance towards the tip ; 

 ears sandy grey, bordered by a very narrow line of dark brown on 

 their inner edge ; a dark patch at the occiput, passing into a dark 

 line down the forehead. 



Female. 

 Feet. Inches. 

 Length from the tip of the nose to the extremity of 1 „ 9 



the tail / 



Length of tail 1 3J 



Length of tarsus and toes, including the nails 5J 



Length of arm and hand, including the nails 5 



Length of face, from the tip of the nose to the base "I „ /* 



of the ear J 2 



Length of ears 1 J 



This new species, for which I am indebted to the kindness of B. 

 Bynoe, Esq., of H.M.S. Beagle, differs from all the other members 

 of the genus in the unusual uniformity of its colouring. Mr. Bynoe 

 collected it on the north coast of Australia, and this is all that is at 

 present known respecting it. In size it is about equal to the P. la- 

 teralis of the western coast, to which, as also to P. penicillata, it is 

 very nearly allied, but differs from both in being destitute of any 

 markings on the sides, in the absence of any dark colouring behind 

 the ears, and in the light colouring of the arms and tarsi. 



