| OCR Text |
Show 806 DR. J. MURIE ON PHASCOLOMYS PLATYRHINUS. [June 27, In P. latifrons, from the altered distribution of the dorsal and lumbar vertebrae, the metapophyses, commencing sometimes at the eleventh and sometimes at the twelfth dorsal vertebra, continue to increase in size to the fourth lumbar, after which they diminish as in the other species. The anapophyses, which in P. platyrhinus and P. wombat are first observable on the eleventh dorsal, in P. latifrons make their appearance very rudimentally on the eighth and ninth dorsal. The diminution of these processes in the lumbar and disappearance in the last of the series are alike in the three species. Fig. 1. Bones of the pelvis of P. platyrhinus. One-third nat. size. Lumbar Vertebrce.-From these being only four in number, as well as from their having a wider stretch of transverse processes, P. platyrhinus and P. wombat possess short, broad loins; whereas in P. latifrons the lumbar region is narrow, elongated, and conical in shape. The average proportional length of the lumbar region between the three species is respectively 4|, 4\ and 6| inches,-the dorsal region contrariwise measuring 12|, 10 and %\ inches in the |
