XX 



No. of 

 Preparations. 



Family Caviidee. 



Genus Dolichotis 1972 



Hydrocheerus 19732000 



Cavia 20012007 



Chinchilla 2008 



Laffostomus 20092011 



Ctenomys 20122015 



Laffotis 20162038 



Family Myopotamida. 



Genus Myopotamus 20392045 



Dasyproda 20462074 



Family HystricidcB. 



Genus Hystrix 20752113 



Erithizon 21142135 



Alherura 21362156 



Family Castorida. 



Genus Castor 21572204 



Fiber 22052207 



Arvicola 22082222 



Family Murida. 



Genus Mus 22232241 



Hapalotis 2242 



Hydromys 22432245 



Family Spalacida. 



Genus Batlyergus 22462251 



Family Helamida. 



Genus Helamys 2252 



Family Jerboidte. 



Genus Dipus . 2253 



