PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
EXPLANATION OF PLATE XV. 
PAGE 
Nesodon imbricatus : Skull (No. 15,000) from below, X i M.a.e. = Ex- 
ternal auditory meatus. P.oc. = Paroccipital pro- 
cess. Pty. — Post-tympanic process of squamosal. 
St.h. = Fragment of stylohyal attached to anterior 
border of tympanic bulla. . . . . . 134 
(VOL. VI.) 
