564 THE BEIDGER EPOCH. 



anterior and subposterior faces. The latter receives the calcaneiim on two 

 oval surfaces, which are joined behind by a narrow strip. The navicular 

 face is subrhomboid, the cviboid one-third as large, and triangular, with a 

 round base outwai-d. The margin of the former scarcely projects beyond 



the superior face. 



Measurements of astragalus. 



II. 



Total width 128 



Total length 107 



Width of tibial face in front 090 



Length of tibial face, externally 088 



Length of internal malleolar face 045 



Length of outer calcaneal, malleolar face, anteroposteriorly 050 



Length of navicular facet 085 



Width of navicular facet (anteroposterior) 06O 



Length of cuboid facet 065 



Width of cuboid facet (anteroposterior) 035 



The centrum of a cervical vertebra, which lacks epiphyses, is very short, 

 and the articular face is a wide, transverse oval. Both are slightly concave, 

 and the axis being slightly oblique, the anterior is the more elevated. The 

 surface of the latter is quite rugose, except on the margins. The cervical 

 canal is wide, and the neurapophyses and parapophyses narrow. Inferior 

 surface regularly convex. 



Measurements of cervical vertebra. 



M. 



Length of centrum 044 



Length of basis of neurapophysis 040 



Length of anterior articular face 102 



Depth of anterior articular face 086 



Width of neural canal at base 060 



The centra of the dorsal vertebrae are too much distorted by pressure 

 for description. 



This amblypod was a huge animal, little less elevated than the Loxolo- 

 phoclon cornutus. Its limbs were more slender in their proportions. It is 

 in this species that I find much evidence in favor of the presence of a pro- 

 boscis of greater or less length. Should several of the other cervical ter- 

 tebrse have been as short as the one preserved, it is evident that the animal 

 could not possibly have reached the ground with a muzzle so elevated as 

 the long legs clearly indicate. The reader is referred to Plates XXX and 

 XXXI for the evidence in pictorial form. 



