PATAGONIAN EXPEDITIONS! PALAEONTOLOGY. 



EXPLANATION OF PLATE LII. 



PAGE. 



Fig. i . BORHY^ENA TUBERATA : Cervical vertebrae from the left side (No. 



15,701). The fourth cervical is missing . 351 

 Fig. 2. " EXCAVATA.: First to fifth cervical vertebrae from the left 



side (No. 15,120) ..... 351 

 Fig. 3. PROTHYLACYNUS PATAGONICUS : First to fifth cervicals from the left 



side (No. 15,700). . . . 365 

 Fig. 4. CI.ADOSICTIS LUSTRATUS : Cervical series from the right side (No. 



Fig. 5. PROTHYLACYNUS PATAGONICUS: Axis from below (No. 15,700) . 365 

 Fig. 6. BORHY^ENA EXCAVATA: Axis from below (No. 15,120) . . . 350 



All the figures are natural size. 



(VOL. iv.) 



