230 GEOGRAPHICAL ZOOLOGY. [part iv. 



N. Australia ; Cricetomys (1 sp.) Tropical Africa ; Saccostomus (2 

 sp.) Mozambique ; Cricctus (9 sp.) Palaarctic region and Egypt ; 

 Gricetuhis (1 sp., Milne-Edwards, 1870) Pekin ; Pseudomys (1 sp.) 

 Australia ; Hapcdotis (13 sp.) Australia ; Phlwomys (1 sp.) Philip- 

 pines ; Platacanthomys (1 sp., Blyth, 1865) Malabar ; Dendromys 

 (2 sp.) S. Africa ; Ncsomys (1 sp. Peters, 1870) Madagascar ; 

 Steatomys (2 sp.) N. and S. Africa ; Pelomys (1 sp.) Mozambique ; 

 Reithrodon (9 sp.) N. America, Lat. 29° to Mexico, and south to 

 Tierra del Fuego ; Acodon (1 sp.) Peru ; Myxomys (1 sp.) Guate- 

 mala ; Hespcromys (90 sp.) North and South America ; Holochilus 

 (4 sp ; ) South America ; Oxymycterus (4 sp.) Brazil and La Plata ; 

 Ncotoma (6 sp.) U.S., East coast to California ; Sigmodon (2 sp.) 

 Southern United States ; Drymomys (1 sp.) Peru ; Ncotomys (2 sp.) 

 S. America ; Otomys (6 sp.) S. and E. Africa ; Merioncs = Gcrbillus 

 (20-30 sp.) Egypt, Central Asia, India, Africa; Bhombomys (6 

 sp.) S. E. Europe, N. Africa, Central Asia ; Malacothrix (2 sp.) 

 South Africa ; Mystromys (1 sp.) South Africa ; Psammomys (1 

 sp.) Egypt ; Spalacomys (1 sp.) India ; Sminthus (1-3 sp.) East 

 Europe, Tartary, Siberia ; Hydromys (5 sp.) Australia and Tas- 

 mania ; Hypogeomys (1 sp., Grandidier, 1870) Madagascar ; Bra- 

 chytarsomys (1 sp., Gunther, 1874) Madagascar ; Fiber (2 sp.) N. 

 America to Mexico ; Arvieola (50 sp.) Europe to Asia Minor, 

 North Asia, Himalayas, Temp. N. America ; Cuniculus (1 sp.) 

 N. E. Europe, Siberia, Greenland, Arctic America ; Myodes\i sp.) 

 Europe, Siberia, Arctic America, and Northern United States ; 

 Myospcdax = Siphneus (2 sp.) Altai Mountains and N. China 1 ; 

 Lophiomys (1 sp.) S. Arabia, and N. E. Africa; Echiothrix 

 (1 sp.) Australia. 



Extinct fihiridce. — Species of Mus, Cricctus, Arvieola, and 

 Myotics, occur in the Post-Pliocene deposits of Europe ; Arvieola, 

 Merioncs, and the extinct genus Cricctodon, with some others, in 

 the Miocene. 



In North America, Fiber, Arvieola, and Neotoma, occur in caves ; 



1 Myospalax has hitherto formed part of the next family, Spalacidse ; but 

 a recent examination of its anatomy by M. Milne-Edwards shows that it 

 belongs to the Muridse, and comes near Arvieola. 



