58 
MACROPODIDjE. 
Hyps ip rymn us Brunii . The molar teeth are proportionately 
shorter and broader than in M. major , and differ in having 
the longitudinal ridge in the central transverse valley almost 
obliterated; but, commencing at the bottom and middle of 
this valley, is a distinct sharp ridge, which runs upwards and 
inwards, and terminates at the inner salient angle of the 
anterior principal cusp. 
Length of tlie second upper true molar teeth 
"Width of ditto ... 
Length of the permanent spurious molar ... 
Lines. 
... 6 * 
5 § 
Several fragments of the cranium and lower jaw of the 
M. Atlas have been found both in the caves at Wellington 
Valley, and in the alluvial or newer tertiary deposits in the 
Condamine River, West of Moreton Bay. In the Museum 
of the College of Surgeons is a shaft of a right humerus 
(having a circumference of three inches below the deltoid 
ridge), distal end of a lemur, and a second phalanx of the 
longest too ol the hind foot, which Professor Owen thinks in 
all probability belong to the present species; they were con¬ 
tained in the same collections as the parts of the cranium 
referred to. 
Macropus Titan (fossil): Owen, in Mitchells Journal. 
A ol. II. p. 305, PI. 47, fig. 3 ; Odontography, PI. 
101, figs. 1 and 2. 
Founded upon portions of the upper and lower jaw, con¬ 
taining molar teeth : these indicate an animal of equal size 
to the preceding, but which is readily distinguished from it 
by the comparatively small size of the first or spurious 
molar; in this respect moro nearly corresponding with the 
M . major. 
A fiagment ol the right side of the upper jaw, contained in 
the Museum of the College of Surgeons, possesses all the five 
