0A1MARDS RAT-KANGAROO. 
209 
that of the head, and internally, with yellow lmirs. Tail 
furnished above with moderately long, and somewhat ad- 
pressed rich brown hairs; beneath, with hairs of a very pale 
brown colour: a crest of long dark brown hairs runs along 
the upper surface of the apical portion of the tail, occupying 
about one-third of its entire length ; at the point is a tuft of 
long white hairs. The fur on the upper parts of the body is 
deep grey next the skin, and each hair is yellowish white 
externally, but dusky at the point ; the longer interspersed 
hairs are black at the point, and annulated with whitish below 
the point. The fur on the belly is of a very pale grey hue 
next the skin. 
Inches. Lines. 
Length from nose to root of tail ... 16 0 
44 of tail . 13 0 
44 of tarsus, without the claws ... 4 3 
44 of ear . 1 2 
I am indebted to Mr. Owen for the loan of a careful 
drawing of the skull of Hyps ip rym n us Whitei , or Ka injur us 
Gaimardi , which he lmd made whilst at Paris. This skull 
is intermediate in some respects between the skulls of II. 
penicillatus and If. Grayi; it differs, however, from both in 
having the auditory bullie smaller, and the interorbital space 
broader. From H. penicillatus it may ho distinguished 
by its great breadth, the zygomatic arches being thrown 
out somewhat more boldly, and the premolar tooth longer 
from front to bnck ; the palate is likewise rather longer. 
A skeleton in the College of Surgeons, bearing the name 
lfypsiprymnuH Hu uteri, has the skull agreeing so closely 
with that of the H. Whitei, as to leave no doubt on my 
mind of the specific identity. This skeleton measures from 
the tip of the skull to the end of the tail 20 "-6"; the scapula 
is l"-7"'; the humerus 1-5-}-; the ulna 2- !■§-; the radius 
l-9i; the hand i-4i; femur 3-7 ; tibia 4-7 ; tarsus 4-0:1. 
The fibula has nearly two-thirds of its length (distal extremity) 
VOL. i. p 
