100 STUDIES IN TASMANIAN MAMMALS LIVING AND EXTINCT, 



With Dr. Stirling's photo of the Diprotodon's pes ( 2 ) 

 placed side by side with the foot of X. mitchelli, we note 

 that in the latter — 



1. The external horn of the navicular is much more 



expanded at the base, 



2. The ecto-cuneiform is more elongated. 



3. The ento-cuneiform is relatively more robust. 



As far as it is fair to express an opinion, we would 

 state that our material suggests less reduction of the toes 

 than obtains in the Diprotodon. Allowing for missing 

 bones, and, therefore, in part open to future emendation, 

 the following set of measurements are submitted : — 



Total length of foot = 355 mm. 



Greatest width = 171 mm. 



Width of toes = 105 mm. 



The Nototherian astragalus does not closely simulate 

 that of the Wombat, but, if that bone from the foot of 

 the Tasmanian Wombat is> compared with the two astragali 

 of the Nototheria just passed in review, it will be found 

 to agree better with that of N. tasmanicum than the cor- 

 responding moiety from the joes of i\ r . mitchelli. We have 

 no bone to contrast, and compare with, from the platyrhine 

 wombat, but we strongly suspect the astragalus from that 

 animal would agree best with K. mitchelli, and so follow 

 out the sequence so frequently noted during our studies. 



THE MANUS. 



Plate XXIII. 



As with the pes, so with the matins, the parts present 

 belong to the left side, and are not quite intact as to 

 several moieties. We hold the following, however : — 



(1) Pisiform. 



(2) Cuneiform. 



(3) Unciform. 



(4) Scaphoid. 



(5) Magnum. 



(6) All five metacarpals. 



(7) Four phalanges of the proximal series. 



(8) All five ungual phalanges. 



From the carpus there are missing the following bones, 

 namely : — 



(1) Trapezoid. 



(2) Trapezium. 



(3) Scaphoidal sessamoid. 

 Also six phalanges. 



(2.) fc'oss. Lake Callabonna, vol. I., part 1, plate 10. 



