n8 



THE DESEADO FORMATION OF PATAGONIA 



much the same throughout. In the female the snout is 

 relatively a little shorter, and in general the female skulls 

 are from 5 to 10 per cent, smaller throughout. The fol- 



Fig. 73. L. gandryi, view of case of the skull, female (L. oxyhynea) 1/4 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 



MALE FEMALE 



420 mm. 

 252 mm. 

 115 mm. 

 235 mm. 



392 mm. 

 236 mm. 

 102 mm. 

 230 mm. 



