PLATE LI. 
Fig. 1. Cranium of Corypliodon eleplianiopus, one-half natural size, viewed from the side. 
Fig. 2. A cast of the brain-cavity of the above cranium, two-thirds the natural size, representing the 
form of the brain from the left side. 
Fig. 3. The same inferior view; t, origin of trigeminus nerve; md, base inferior maxillary branch; p, ribs 
in line with the anterior pyramids- 
Fig. 4. The same, superior view. 
Fig. 5. The same, anterior view. 
Fig. 6, The same, posterior view, cut oif at the superior margin of the foramera magnum. 
