MAMMALIA. 



13 



men in England. The complete extinction before historic Pier-case 3. 

 times of so widely- spread an animal is very remarkable. 

 Hoploplioneus, of which skulls are exhibited, is an allied 



Fig. 4. — Diagram of head of the "Sabre-toothed Tiger" (Mach.xrodus 

 neogiens), from the Pampa Formation of Bueuos Aires, Argentine 

 ilepublic, showing the widely open mouth ; one-eighth nat. size. 

 (After W. D. Matthew.) 



genus from the Oligocene AVhite Eiver Formation of Xorth 

 America. Ensmilas and Adurogale, represented Ijy jaws, are 

 small ancestral forms from the Oligocene Pho.'^phorites of 

 southern France. 



In the exhibition of remains of Hysenidae (Pier-case 3) Pier-case 3. 

 the largest space is occupied by the European cave-hyaena, 

 which seems to have been essentially identical with the 

 existing spotted hytena {Hysena crocuta) of Africa. Indi- 

 viduals in all stages of gi'owth are represented liy the jaws 

 and teeth from the English caverns, and by other fragments 

 from river deposits and the Norfolk Forest Bed. Other true 

 hyienas are known by fossils from the Lower Pliocene of 

 Greece, Samos, Persia, and India ; Init there are no traces 

 of the family in America. Ictitherium, from the Lower Table-case 

 Pliocene of Greece, Samos, Persia, and India, is known not 

 only by fine skulls, of which there are some in Table-case 2, 

 but also liy the greater part of the skeleton. It is an 

 ancestral genus, connecting the Hyajnidte with the 

 Viverridfe. 



The Viverridae, or civets, mongooses, and their allies. 



