54 



ZOOLOGY OF THE VOYAGE OF THE BEAGLE 



species extends slightly on the sides of the body, and the lower portion of the 



cheeks. 









"This species was caught on the mountains, thickly covered with peat, 

 of Hardy Peninsula, which forms the extreme southern point of Tierra del 

 Fuego."— D. 



17. MUS CANESCENS. 



Mus canescens, Waterh., Proceedings of the Zoological Society of London for February, 1837, p. 17. 



oculis fiavido 



fl 



y* 



fi 







Description. — Fur moderately long and loose ; ears small ; tail nearly equal 

 to the body in length : general colour gray, with a wash of very pale yellow ; 

 chin, throat, and under parts of the body, white. Tail tolerably well 

 clothed with hairs, those on the upper surface brown, and those on the 

 under, whitish ; on the sides are some yellowish hairs. Ears with yellow 

 hairs on the inner side ; tarsi pale yellow, toes white ; muzzle and around 



the eye yellowish. 



In. Lines. 



Length from nose to root of tail 



of tail 

 from nose to ear 



3 6 

 2 1 



* 



In. Lines 



Length of tarsus (claws included) . 



of ear • 









4 



Habitat, Santa Cruz and Port Desire, (December.) 



u Very common in long dry grass in the valleys of Port Desire." — D. 



The skull is figured in Plate 33, fig. 5, c. Fig. 5, a. represents the molars of 

 the upper jaw ; fig. 5, b. those of the under jaw, and fig. 5, d. represents the 

 posterior molar of the under jaw when more worn. 



It was with some hesitation that I described this as a distinct species in the 

 Society's Proceedings. I have now re-examined the specimens, and still am 



* The dimensions given in the Proceedings of the Zoological Society were taken from a younger specimen 

 than those here described, and there is an error in the length of the tail there given, which should be 1—10 

 instead of 2 — 10. 



