83 



Potamochocrus Gray—Choiropotamus Gray. 

 Sus Linn. 



Sus Gray. Scrofa Gray. 



Centuriosus Gra.y=Gyrosus Gra,y=Pti/chochocrus Fitz. 

 Porcula Hodgson. 



Extinct genus inccrtcc scdis. 

 Hippohyus Falc. and Cautl. 



XLIV. DICOTYLIDAE. 



Genera. 



Dlcotylrs Cuv. 

 Hfotophorus Gray. 



Extinct. 

 Platygonus Lee, Leidy. = IIyops Lec.—Protochoerus Lee. =Euclioerus Leidy. (Fids 

 Leidy.) 



SUPER-FAMILY ANTHRACOTHEROIDEA. 

 XLV. ANTHRACOTHERIIDAE. 



Extinct. 



SUB-FAMILIES. 



A. Premolars of upper jaw in part (PM 4) resembling the true molars, 

 and with tubercles in transverse series (y | --) separated by transverse 

 vallies; the preceding (PM 3, 2, 1) successively more and more differ- 

 entiated forwards. 



HYOBOTAMINAE. (A.) 



B. Premolars (PM 4, 3, 2, 1) of upper jaw all differentiated from the true 

 molars, and each with a conical crown and a small inner lobe. 



ANTHRACOTHERIINAE. (B.) 

 A. HYOPOTAMINAE. 



Hyopotamus Owen. 



Bothryodon Aymard=^4«coc/iis Poiuel. 



B. ANTHRACOTHERIINAE. 



A nthracotherium Cuv. 

 Elotherium Poiuel. 



EXTINCT OMNIVORA? INCERT.E SEDIS. 

 Choeropotamus Cuv. 

 Palaeoc.hnerns Pomel = Cyclognathus Croizet = Brachyynathus Pomel = Synaphodus 



Pomel. 

 Choeromorus Lartet. 

 Entelodon Aymard. 

 Ileterohyns Gervais. 

 Acotherulum Gervais. 

 Choerothcrium F&lc. = Tctraconodon Falc. 



