1898.] Osborn, Evolution of the Amblypoda. Parti. 



187 



in the median line (as in Coryp/iodo/i a.\\d Uintat/ieriinii), the widely 

 exposed mastoid (as in Uinfatheriu///) ; the nasals extending far 

 back between orbits (as in Coryphodoii) ; the molars triangular and 

 selenodont leading to the CorypJioJoji type. The scapula is 

 unknown, probably acuminate as in Periptychus. The most 

 striking likenesses to Coryphodoii in the fore-limb are in the 

 muscular crests of the humerus, the outward flexure of the elbow, 

 the displacement of the lunar upon the unciform. 



Structure of the Feet in Pantolambda. 



Both manus and pes are of exceptional interest. The terminal 

 phalanges are hoof-bearing. 



Fig. 12. Pantolainbda iHit/uiiodon. Superior view of carpus No. 2546, partly restoretl. and 

 tarsus (composition No. 2551), showing essential Creodont structures. Coll. Am. Mus. Nat. 

 Hist. 



Fore-foot. — As carefully put together by Dr. Matthew (see Fig. 



12), the manus certainly ])0ssessed a separate centiale. Other 



exceptional features are the curvature of Mtc.I and the i)ropor- 



tions of the distal carpals. 



Pantolambda \ jNIagnum Trapezoid Trapezium 



baihmodon. { smallest. 4 mm. intermediate, g mm. large. 16 mm. 



Coryphodoii i Magnum Trapezoid Trapezium 



testis. ( large. 37mm. smallest. 30mm. largest. 40mm. 



