364 THE ANATOMY OF VEETEBRATED ANIMALS. 



glenoidal process is larger than in the Horse ; the orbit is 

 not separated from the temporal fossa; the nasals are 

 widely separated from the premaxillae ; the premaxillse are 

 very small, and are early ankylosed. 



The hinder margin of the osseous palate is opposite the 

 anterior edge of the penultimate molar. The mandibvdar 

 rami unite in a very long symphysis ; the ascending portion 

 of the ramus is large, and projects backwards with a convex 

 edge in a remarkable manner. There is a high coronoid 

 process. 



In the fore limb, the scapula has no acromion, and the 

 coracoid is a mere tubercle. The supraspinous fossa is 

 very much larger than in the Horse or E/hinoceros. The 

 radius and the ulna are complete, but not movable upon 

 one another. Although, by thg completion of the fifth digit, 

 in addition to the second, third, and foui-th, there are four 

 digits in the manus, the Perissodactyle character is mani- 

 fested by the fact that the third is longest, and symmetrical 

 in itseK, while the others are asymmetrical. The femur has 

 a strong third trochanter ; the fibula is complete ; the as- 

 tragalus more Rhinocerotic than Equine. There is no 

 trace of a hallux, but the fifth digit of the pes appears to 

 be represented by an osseous inidiment. 



In the presence of the full complement of incisors and 

 canines the Tapir is more Horse-like than Rhinocerotic, 

 but is still very pecuL'ar ; for the outer upper incisors are 

 larger than the canines, while the outer lower incisors are 

 much smaller than the canines, and are apt to fall out at a 

 certain age. The canines, are still more closely approxi- 

 mated to the incisors than in the Horse, especially in the 

 lower jaw, and, consequently, the diastema is vei-y large. 

 The six posterior molars in the upper jaw, and the five 

 posterior molars in the lower, present nearly the same 

 stnicture. There is a low outer wall with two slightly 

 marked concavities (in the maxillary teeth) or convexities 

 (in the mandibular teeth) on its outer face. From this two 

 ridge-like laminae run inwards and a little backwards across 

 the crown of the tooth. The valleys are broad and shallow, 



