Protolabis ----? Cope. (See Wheeler's Survey, vol iv., p. 343.)

Fig. 6.--Right maxillary and premaxillary. (This has never been drawn

before, and was kindly lent to us for this purpose by Prof. Cope.)

Camelus bactrianus. Modern camel.

Fig. 7.--Right maxillaries, one half natural size.

[Illustration]