840 ROBERT COLLETT, 



The skull (length 31 mm, breadth 11 mm) cannot be disting- 

 uished from that of an equally large specimen from Norway. 



5. TTro^nys macropus (Gray) 1866. 



Mus macropus Geay, in: Proc. Zool. Soc Lond. 1866, p. 221 (1866). 

 Uromi/s macropus Petees, in: Monatsber. Acad. Wiss. Berlin, 1867, p. 343, 



PI. 7 (1867). 

 Gymnnmys macropus Gray, in: Proc. Zool. Soc. Lond. 1867, p. 595 (1867). 

 Hapulotis caudimaculala Kbefft, in: Proc. Zool. Soc. Lond. 1867, p. 316 



(1867). 



A. Male. Herbert Vale, Febr. 1883 (skin with skull). 



This species is said to be not uncommon in hollow trees in the 

 plains, where they are eaten by the natives; Dr. L., however, only 

 obtained a Single specimen, a fully grown male, which, on the whole, 

 corresponds to Peters' description and figure (1867) of a specimen 

 from Cape York. 



The length and colour of the tail probably vary — : in the pre- 

 sent specimen the inner half of the tail is black, the outer yellowish 

 white, and this latter colour also extends a little along the under side 

 of the inner half. The tail in this specimen is comparatively short, 

 as it is slightly shorter than the length of the body; whilst the re- 

 verse is the case in the somewhat smaller specimen described by 

 Peters, in which the length of the body was 280 mm, the tail 335 mm. 



Sorae measurements taken from the mounted specimen: 

 Length of body, from the end of snout to the root of tail (about) 298 mm 



Length of tail 292 „ 



Height of ear (along the inner margin) 29 „ 



Distance from eye to ear 19 „ 



Sole of bind foot (to the end of the claw) 64 „ 



The tail is not entirely naked, but at the end of each scale there 

 is a Single erect hair, which, however, is so short that it can only 

 be Seen under the lens. 



The skull. The length of skull is 69 mm, breadth 35 mm. 

 Length of lower jaw 41 mm. 



The dentition is normal: %\ m\ (16). 



The teeth in this very old specimen are much worn, and exactly 

 resemble the figure in Mr. Peters' paper. The groove which (accord- 

 ing to Gray) is found on the anterior side of the lower incisors, is 

 in this specimen so indistinct, as to be almost invisible. 



