418 



Zoological Society* 



Mr. Waterhouse laid before the Meeting the following tabular 



view <>t' the distribution of tin- Rodentia: — 



Europe and North 



North America. 



Africa. 



India and I*. 

 lands. 



South A mertca 



and \V« -i Indian 

 [alanda. 



| 



r 



:in n-. 

 rom\>. 

 1. '1 .111)1 



:i. Sperrnophilua. 

 •_*. Arctomya. 



v. 







| i, Myoxui 



«' 



I 8. Dipua. 



1 6. Mil-. 



c H 



v. : 



6. Cricetus. 



, 1. Castor. 



•jo. Arvicola. 

 \. Lc-nunus. 

 3. Spalax. 



i. Hyatrix. 



•-kJ 



5. Lepus. 

 3. Lagomys. 



SO. Scini us. 



i. Pteromya, 

 :». Tamiaa. 

 10. Spennophilua. 



8. Arctomys. 



i. dplodontia. 



.'. Mori ones. 



6. f Mus. 

 \ Hesperomys. 



1. Sigmodon. 



2. Neotoma. 



1. Castor. 

 1. Ondatra. 

 8. Arvicola. 

 I. Lcmmus. 

 10. Geomys. 



6. SduruB. 

 3. Xcms. 



2. Graphiurua. 



3. Myoxus. 



4. Dipws. 



10. Mus. 



2. Dendromys. 

 6. Gerbillus. 



1. l'sanimomys. 



3. Euryotis. 



iiiirii.-. B. Si iu 

 9 Pteromya. 



12. Mus. 30. f Mus. 



I Hesperomvs. 

 2. Gerbillus. 3. Reithrodon. 



1. Phlceomys. 



2. Rhizomys. 



1. Erethison. 



1. Hystrix. 



1. Hystrix. 

 1. Atlierura. 



1. Aulacodus. 

 1 . Orycterus. 

 4. Bathyergus. 

 l. Petromya. 



81 spe. 16 gen. 



{ 



3. Cercolabcs. 



2. Synetheres. 



3. Capromys. 



1. Myopotamus. 

 10. Echimys. 

 6. Nelomys. 



1. Cercomys. 



2. Dasyprocta. 



1. Ccelogenys. 



2. Ctcnomys. 



1. Poephagomys. 



1. Octodon. 



2. Abrocoma. 



1. Chinchilla. 



2. Lagotis. 



1. Lagostomus. 



6. Cavia. 



2. Kerodon. 

 1. Dolichotis. 



1. Hydrochcerus. 



15. Lepus. 

 1. Lagomys. 



6. Lepus. 



4. Lepus. 1. Lepus. 



1. Lagomys. 



99 spe. 19 gen. 53 spe. 16 gen. 58 spe. 10 gen, 



89 spe. 25 gen. 



Mr. Waterhouse stated, that in the construction of this table he 

 had endeavoured to display the geographical distribution of the sec- 

 tions of the order Rodentia, and that to accomplish this, it of course 

 became necessary to combine some system of classification, with an 

 arrangement of the genera according to the countries in which they 

 were found. The table is divided into five columns, one column 

 being devoted to each of the following portions of the globe: 1st, 



