120 



RECORDS OF TUF. ATSTRALTAX IMTSEUM. 



measurements of botli species prove the bones of the skull to be most 

 variable, the apparent differences merging into one another, so that a 

 detailed list of measurements seems superfluous. 



Ef>uiiys assninUs. 



Fins. 1 and 2. Sluill of aJiilt. 



FiK. 3. Upper molar tcuth of same specimen. 



l-"iK. 4. Lower molar teeth of same specimen. 



Tefth. — Aiitfiioi- edges n\' iip|H'r iiicisoi's orange, tlie colour varying 

 ill intensity' ; lower incisoj's paler. Tlie molars are lehitively finer than 

 those of fiitriiK's, the tooth rows of nxsiiiiilii^ being actually shoi'ter and 

 narrower than those of the former species in skulls of equal length. 

 Upper molars tapering from the first to a comparatively small third 

 molar ; there is a distinct external lobe on the thii-d cusp of m^ and m^, 

 foiUied bv an aii<_Mihir fold of (lie anterior margin of each ; tliei-e is no 



