PATAGONIAN EXPEDITIONS I PALAEONTOLOGY. 



EXPLANATION OF PLATE LVII. 



PAGE 



Fig. i. EUCHOLCEOPS FRONTO: Cervical vertebra, left side. Amer. Mus. 



Nat. Hist. (No. 9,241) 273 



Fig. 2. EUCHOLCEOPS INGENS: Mandible, right side. Amer. Mus. Nat. 



Hist. (No. 9,307) 267 



Fig. ia. " " Mandible, crown view. 



Fig. 3. " " Mandible, left side. Ameghino collection. 



All figures natural size. 



(VOL. v) 



