118 THE DESEADO FORMATION OF PATAGONIA 
much the same throughout. 
are from 5 to 10 per cent. smaller throughout. 
In the female the snout is 
relatively a little shorter, and in general the female skulls 
The fol- 
Fig. 73. L. gandryi, view of case of the skull, female (L. oxyhynea)—1r/4 natural size; Tym- 
pamic bullae broken open. 
lowing two sets of figures illustrate the comparative sizes 
of the two sexes. 
Skull, greatest length front to back 
Skull, greatest width 
Skull, length of nasal bone 
Skull, length of palate 
SPECIMEN 3335 SPECIMEN 3291X 
FEMALE 
MALE 
420 mm. 
252 mm. 
115 mm. 
235 mm. 
392 
236 
102 
230 
mm. 
mm. 
mm. 
mm. 
