REFERENCES TO THE PLATES. 457 



PLATE VI. 



Figures of the natural size. 

 Fig. 1. Oeeodon Culbeetsoni. See page 86. 

 Left lateral view of a remarkably well preserved skull. 

 Figs. 2, 3. Oeeodon gracilis. See page 94. 

 Right lateral aad upper views of a remarkably well preserved skull. 



The 'originals of these figures are nearly as perfect as represented; several salient points alone being 

 lost, and a comparatively few fractures existing. 



PLATE VII. 



Figures of the natural size. 



Fig. 1. Oeeodon majoe. See page 99. 



Inferior view of the right half of a remarkably well preserved skull. Points imperfect in the original 

 have been mainly restored from the opposite side, and jiartly from other specimens. 



Fig. 2. Oeeodon Culbeetsoni. See page 86. 



Upper view of the left half of a remarkably well preserved skull, but slightly restored from other 

 specimens. 



PLATE VIII. 



Oeeodon majoe. See page 99. Of the natural size. 



Fig. 1. View of the left side of a remarkably well preserved skull, slightly restored from the oppo- 

 site side and from other specimens. 

 Fig. 2. Upper view of the same. 



PLATE IX. 



Figures of the natural size. 



Figs. 1, 2. Oreodon Culbeetsoni. See page 86. 



Upper views of two skulls. The supra-orbital foramina, usually two or tliree lines apart in the spe- 

 cies, in the specimen of Fig. 1 are half an inch apart. In another specimen they are three-fourths of 

 an inch apart. 



Fig. 3. Variety of O. gracilis ? Oeeodon affinis. See page 105. 



Upper view of the facial portion of a skull. 



Fig. 4. Variety of O. major? Oeeodon hybridus. See page 105. 



Upper view of the facial portion of a skull. 



Fig. 5. Peocamelus occidentalis. See page 157. 



Symphysial fragment of a lower jaw. The original contains both canines, the median incisors, and 

 the left lateral one. In the figure a second lateral incisor is introduced from an isolated specimen be- 

 longing to another individual. 



PLATE X. 



Merycochceeus proprius. See page 110. 



Figures 1, 2, about two-thirds the diameter of nature ; the remainder of the natural size. 

 Fig. 1. Left side of the upper jaw, consisting of the greater part of the maxilla, the premaxilla, and 

 parts of the malar and lachrymal. It contains a full series of teeth, but the lateral incisor, the first 



58 



