PATAGONIAN EXPEDITIONS! PALEONTOLOGY. 



EXPLANATION OF PLATE XLV. 



PAGE. 



Fig. i. BORHY^ENA EXCAVATA : Left side of the skull (No. 15,120). The 



median premolar is supplied from the op- 

 posite side . . . . . . 348 



Fig. 2. . BORHY^NATUBERATA: Right radius and ulna, outer side (No. 15,701). 352 

 Fig. 2a. " " Rightradius and ulna, inner side (No. 15,701). 



Fig. 3. " " Right half of mandible, crown view (No. 



15,701). The median premolar is restored 

 from the opposite side .... 348 



Fig. 4. Rib, outer side (No. 15,701). . . . 352 



Fig. 5. " " Presternal segment from below (No. 15,701) 352 



Fig. 6. " Seventh ? dorsal vertebra, right side (No. 



All the figures ate natural size. 



(vor.. iv.) 



