PART III: MARSUPIALIA, AMPHITHERIID/JE— BORH Y /ENID.E. S77 
Name, authority, and date. Type or included species, and localities. 
Pena Tus Own. lS esa ene Se Peramus tenuirostris, Durdlestone Bay, England. 
":IPeraspalüa WEN, dodo s soe: Peraspalax talpoides, Durdlestone Bay, England. 
Phascolestes OWEN, 1871 ............ Peralestes (Phascolestes?) longirostris, P. dubius 
(type), Durdlestone Bay, England. 
Stylacodon MAnsHB, 1879............ Stylacodon gracilis, Wyoming. 
T Stylodon OwzN, 1866. ............. Stylodon pusillus, Durdlestone Bay, England. 
(See Athrodon and Kurtodon.) 
Thylacotherium V ALENCIENNES, 1838. New name for Amphigonus and Amphitherium— 
**un nom plus significatif." Type, Didelphis 
- prevostii, Stonesfield, England. 
Trouessartella CossMANN, June, 1899. New name for Trouessartia Cossmann, 1899. 
t Trouessartia CossMANN, May, 1899. New name for Odontostylus. (See Trouessartella. ) 
BORHYZENIDZE.^* 
FAMILIES AND SUBFAMILIES. 
Acyonide AMEGHINO, 1889. Hathlyacynidae AMEGHINO, 1894. 
Amphiproviverride AMEGHINO, 1894. Proborhyaenidae AMEGHINO, 1897. 
Arminiheringiidae AMEGHINO, 1902. Prothylacynidae AMEGHINO, 1894. 
Borhyenide AMEGHINO, 1894. Sparassodontidae RoaER, 1897. 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localities. 
Acrocyon AMEGHINO, 1887.......... Acrocyon sectorius, southern Patagonia. 
Acyon AMEGHINO, 1887..---.-.----- Acyon tricuspidatus, southern Patagonia. 
Agustylus AMEGHINO, 1887......... Agustylus cynoides, southern Patagonia. 
Amphiproviverra AmEGHINO, Dec., New name for Protoproviverra Ameghino, 1891. 
1891. 
Anatherium AMEGHINO, 1887........ Anatherium defassus, southern Patagonia. 
Arctodictis MERCERAT, 1891......... Arctodictis muniz, A. australis, Patagonia. 
Arminiheringia AMEGHINO, 1902 ..... Arminiheringia auceta, A. cultrata, Patagonia. 
Borhyena AMEGHINO, 1887 ......... Borhyena tuberata, southern Patagonia. 
Cladosictis AMEGHINO, 1887......... Cladosictis patagonica, RioSanta Cruz, Patagonia. 
Conodonictis AMEGHINO, 1891 ....... Conodonictis saevus, C. exterminator, Patagonia. 
Dilestes AMEGHINO, 1902............ Dilestes dilobus, Patagonia. 
Dynamictis AMEGHINO, 1891 ........ Dynamictis fera, southern Patagonia. 
Hathliacynus AMEGHINO, 1887 ...... Hathliacynus lustratus, southern Patagonia. 
Ictioborus AMEGHINO, 1891 ......... Ictioborus fenestratus, southern Patagonia. 
Napodonictis AMEGHINO, 1894....... Napodonictis thylacynoides, Patagonia. 
Perathereutes AMEGHINO, 1891 ...... Perathereutes pungens, P. obtusus, P. amputans, 
southern Patagonia. 
Pharsophorus AMEGHINO, 1897 ...... Pharsophorus lacerans, P. tenax, P. mitis, P. 
tenuis, Patagonia. 
Proborhyaena AMEGHINO, 1897 ...... Proborhyaena gigantea, P. antiqua, Patagonia. 
Procladosictis AMEGHINO, 1902 ...... Procladosictis anomala, P. erecta, Patagonia. 
Prothylacynus AMEGHINO, 1891...... Prothylacynus patagonicus, southern Patagonia. 
t Protoproviverra AMEGHINO, 1891... Protoproviverra manziana, P. ensidens, P. obusta. 
(See Amphiproviverra. ) 
Pseudoborhyaena AMEGHINO, 1902... Pseudoborhyaena macrodonta, P. longaeva, Pata- 
gonia. 


* Acyonid:e has priority of five years merely by publication in a nominal list, but 
as Borhyaenid:e has come into more general use it is here adopted provisionally. 
