230 GEOGRAPHICAL ZOOLOGY. [part iv. 



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

 sp.) Mozambique ; Cricctus (9 sp.) Pala^arctic region and Egypt ; 

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

 Australia ; Hapalotis (13 sp.) Australia ; Fhlceomys (1 sp.) Philip- 

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

 (2 sp.) S. Africa ; Fcsomys (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 ; Hesperomys (90 sp.) North and South America ; Holocliilus 

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

 Scotoma (6 sp.) U.S., East coast to California ; Siymodon (2 sp.) 

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

 S. America ; Otomys (6 sp.) S. and E. Africa ; Mcrioncs = Gerhillus 

 (20-30 sp.) Egypt, Central Asia, India, Africa; Bhomhomys (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; .S?/po^eom3/s (1 sp., Grandidier, 1870) Madagascar; Bra- 

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

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

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

 N. E. Europe, Siberia, Greenland, Arctic America ; MyodesXi sp.) 

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

 Myospalax = Sijjhneics (2 sp.) Altai Mountains and N. China^; 

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

 (1 sp.) Australia. 



Extinct Muridce. — Species of Mus, Cricetus, Arvicola, and 

 My odes, occur in the Post-Pliocene deposits of Europe ; Arvicola, 

 Meriones, and the extinct genus Cricetodon, with some others, in 

 the Miocene. 



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



^ Myospalax has hitherto formed part of the next family, Spalacid* ; but 

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

 belong.s to the Muridte, and comes near Arvicoln. 



