PLATE LXXVII. 
Cranium and teeth of Camels, three-fourths the natural size. 
Fig. 1. View of the side of the craaium of Procamelus occidentalis, lis’'rGd ou the preceding plalc. 
Fig. 2. Posterior view of the same cranium. 
Fig. 3. Fragmentary molar dentition of the lower jaw of a second individual, left side, from above. 
Fig. 4. Portion of left mandibular ramus of Pliaucheniahumphresiana, from the outer side; a, from above 
Pago 344. 
Fig. .5. Portion of left superior maxillary bone, with molars of PUauchenia vulcanorum, onternal view ; a 
inferior view. Page 345. 
Fig. 6.,Portion of superior maxillary boue of a Camel, with milk dentition. P;ige 345. 
