120 MACBO^ODID^. 



than 'New South Wales ones, and have larger and four-grooved 

 instead of three-grooved posterior premolars, whUe at the same time 

 the peculiar dwarf form described from Tasmania as " P. rufus " is 

 again even smaller than the New South Wales specimens. On the 

 other hand, however, intermediate specimens certainly occur, as -well 

 as exceptions to the general rule as to locality*, and therefore I 

 feel constrained for the present to unite all the varieties under a 

 single name. 



, I Ad. 2 & vg. sks. I New South Wales. Gould OoU. 

 "'*■ jskuUofa. [ 



c. Ad. sk. New South Wales. Zool. Soc. 



{Type of Sypsiprymnus myomrus, Ogilb.) 



( Imm, sk. I Victoria (?). Dr. Lhotsky [P.J. 

 '*• ) Skeleton (mounted). \ 



\ Ad. sk. I , New Norfolk, Tas- Gould Coll. 

 '• I Skull, j ° • mania. 



(Type of Hypsiprymnus apicalis, Gould.) 



, I Imm. & yg. sks. I Tasmania. ' Gould Coll. 

 J' 9- \ Skull of/. \ 



, I Ad. sk. I Tasmania. Capt. Ross, R.N. [P. 



*• jSkuU. \ ' &0.]. 



. j Ad. St. I , Tasmania. Purchased. 

 '■ I Skull. ( °- 



j. Ad. sk. Tasmania. Purchased. 



;i;. Ad. sk. (imperfect). Tasmania. W. F. Petterd, Esq. 



[E.]. 



r.Hig 



I. Yg. skulli Launceston, Tasmania. T. Higgina, Esq. [0.]. 



(k & I typical of Potorous rufits, itigg. & Pett.) 

 m. Ad. skull ( c? ). Lauueeston, Tasmania. T. Higgins, Esq. [C.]. 



n. Skeleton. Purchased. 



2. Potorous gilberti. 



Hypsiprymnus gilherti, Gould, P. Z. S. 1841, p. 14 ; id. Mon. Macrop. 



pi. XV. (animal) (1841); Oray, Gh-ey's Austr., App. ii. p. 403 



(1841) ; id. List Mamm. B. M. p. 94 (1843) ; Schinz, Syn. Marrnn. 



i. p. 542 (1844) ; Oould, Mamm. Austr. ii. pi. Ixix. (animal) 



(1854) ; Wagn,. Schr. Smcff. Supp. v. p. 288 (1855) ; Gieb. Odontogr. 



p. 4.3, pi. xix. fis. 10 (teeth) (1855) ; id. Siiug. p. 690 (1859) ; 



Oerrard, Cat. Bones Mamm. B. M. p. 130 (1862) ; Krefft, Mamm. 



Austr. text to pi. xi. p. 5 (1871) ; Garrod, P. Z. S. 1875, p. 58. 

 Hypsiprymnus micropvis ( Gould), Waterh. jard. Nat. Libr., Mamm,. 



xi. p. 180 (1841); Schina, Syn. Mamm. i. p. 640 (1844). 

 Hypaiprvmnus (Potorous) gilberti, Waterh. N. H. Mamm. i. p. 229, 



pi. viii. fig. 1 (skull) (1846). 



Gilbert's Eat-Kakgaeoo. 



External characters precisely as in P. tridactylus, except that the 

 size is less than is usual in that species, although greater than in the 

 dwarf form " P. rufus." Naked part of rhinarium apparently not 

 running quite so far back along the top of the muzzle. 



* As, for example, skull no. 3804 of the College of Surgeons, from the Murray 

 River, South Australia, which has a distinctiy four-grooved upper p.'' 



