32 



Annals of the Carnegie Museum. 



robust, the limbs are short, the metacarpals longer than the metatar- 

 sals, the ungual phalanges are depressed, broad, and flat as in Meso- 

 reodon chelonvx Scott. 



Fig. 5. Restoration of Phenacoccelus typus. \ nat. size. Type, No. 1263. 



Measurements. 



mm. 



Total length of the skeleton 890 



Total height of the skeleton at the second dorsal vertebra 450 



Length of the scapula 106 



Antero- posterior diameter of scapula at the superior border 71 



Greatest length of humerus 140 



Greatest length of radius no 



Greatest length of ulna 139 



Length of carpus 22 



Transverse diameter of carpus at the head of the metacarpals 27 



Length of metacarpal III 55 



Length of tibia, approximately 120 



Length of tarsus 34 



Transverse diameter of tarsus at the head of the metatarsals 25 



Length of metatarsal IV 47 



Length of phalanges of fourth digit of pes 48 



Protomeryx cederensis Matthew. 



Some fragmentary remains from the middle Monroe Creek horizon 

 are provisionally referred to this species. The mandible of No. 1329 

 (Carnegie Museum Catalogue of Vertebrate Fossils) is relatively- 

 slenderer than that in P. cederensis, but the teeth are equally hypso- 

 dont. The upper molars are distinctly more hypsodont than in Pro- 



