PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
EXPLANATION OF PLATE LXIV. 
Fig. i. Paleothentes intermedius : Skull, palatal view (No. 15,225) 
Fig. i a. “ “ “ from above “ “ 
Fig. 2. “ minutus : Left maxilla, palatal view (No. 15,709) . 
Fig. 3. Abderites crassignathus : Left half of mandible, outer side (No. 
15,079) . . . • _ • 
Fig. 3#. “ “ Left half of mandible, crown view (No. 
i 5 >o 79 )- > 
Fig. 4. Decastis columnaris : Anterior portion of the right half of the 
mandible, outer side (No. 9594 American 
Museum of Natural History). The pit- 
ting on the anterior portion of the jaw is 
pathological ...... 
Fig. 4 a. “ “ Right ramus, crown view (No. 9594 Ameri- 
can Museum of Natural History). 
Fig. 5. Callo menus ligatus : Right half of the mandible, outer side (No. 
15.066) ....... 
Fig. 5 a. “ “ Right half of the mandible, crown view (No. 
15.066) . 
Fig. 6. Decastis columnaris : Left half of mandible from the outer side 
(No. 15,710) 
Fip\ 6a. “ “ Left half of mandible, crown view (No. 
i 5 > 7 io). 
All the figures are three times the natural size. 
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(VOL. IV.) 
