178 ZOOLOGICAL GEOGRAPHY. [part in. 



very characteristic and almost exclusively confined to it, are in 

 italics. The number prefixed to each family corresponds to 

 that of the series of families in the Fourth Part of this work, 

 so that if further information is required it can be readily 

 referred to without consulting the index. Names inclosed in 

 parentheses — ( . . . ) thus — indicate families which only just 

 enter a region from an adjacent one, to which they properly 

 belong. The eye is thus directed to the more, and the less im- 

 portant families ; and a considerable amount of information as 

 to the general features of the zoology of the region, is conveyed 

 in the easiest manner. 



The tables of genera of Mammalia and Birds, are arranged on 

 a somewhat different plan. Each genus is given under its 

 Family and Order, and they follow in the same succession in all 

 the tables. The number of species of each genus, inhabiting 

 the region, is given as nearly as can be ascertained ; but in many 

 cases this can only be a general approximation. The distribution 

 of the genera within the region, is then given with some detail ; 

 and, lastly, the range of the genus beyond the region is given 

 in general terms, the words " Oriental," " Ethiopian," &c, being 

 used for brevity, to indicate that the genus occurs over a con- 

 siderable part of such regions. Genera which are restricted to 

 the region (or which are very characteristic of it though just 

 transgressing its limits) are given in italics ; while those which 

 only just enter the region from another to which they really 

 belong, are enclosed in parentheses — ( . . . ) thus. The genera 

 are here numbered consecutively, in order that the number of 

 genera in each family or each order, in the region, may be readily 

 ascertained (by one process of subtraction), and thus compari- 

 sons made with other regions or with any other area. As the 

 tables of birds would be swelled to an inconvenient length by 

 the insertion in each region of all the genera of Waders and 

 Aquatics, most of which have a very wide range and would 

 have to be repeated in several or all the regions, these have 

 been omitted ; but a list has been given of such of the genera 

 as are peculiar to, or highly characteristic of each region. 



As this is the first time that any such extensive tables of 



