DEALT WITH IN THE PKESENT WORK. liii 
Three species, Lethe sicelis, Arhopala japonica, and Parnara jansoni, have 
only been found in Japan and Corea. 
Among the six hundred and fifty species dealt with in the present 
work, there are three hundred and thirty-six which occur in other regions. 
Of these, one hundred and seventy-four are found in the Oriental Region, 
whilst one hundred and seventy are found in the Palaearctic * Region, and 
fifteen are common to both. 
Twenty species occurring at extreme elevations in the Himalayas belong 
to and are included with those enumerated as found in the Palaarctic Region. 
Of these, fifteen are also found in Europe, and the remaining five in Central 
Asia. 
Species of Rhopalocera occurring in the watershed of the Yang-tze-kiang 551 
Common to hoth the Paleearctic and Oriental Regions 24 " 
Occurring in the Oriental Region or having Oriental affinities 359 V 551 
Occurring in the Palaearctic Region or having Palsearctic affinities 168 
Occurring in the Palaearctic Region, but having Oriental affinities 19 "1 
Palajarctic species occurring near or above the forest-limit 121 I 168 
Palsearctic species occurring at moderate elevations 28 J 
If the 19 species exhibiting Oriental affinities although occurring in Palaearctic limits 
be deducted from the total number given in the table as Palaearctic, there remain 149 species ; 
but as 121 of these are found at extreme elevations, there remain but 28 Palaearctic Butterflies 
occurring in the same zone with the 359 species having Oriental affinities, excluding the 
24 species common to both the Palaearctic and Oriental Regions, being a proportion of over 12^ 
of the latter to 1 of the former. 
When the more southern portions of Wallace's Manchurian Subregion have been explored, 
it ■will probably be found that the Oriental species will still further predominate. 
Species- of Rhopalocera occurring in China north of the watershed of the Yang-tze-kiang . . 108 
Common to both the Palsearctic and Oriental Regions 15 ^ 
Occurring in the Oriental Region or having Oriental affinities 14 I 108 
Occurring in the Palaearctic Region or having Palaearctic affinities 79 J 
Occurring in the Palaearctic Region but having Oriental affinities 8 
Deducting the 15 species of Rhopalocera common to both Regions from the total number 
* The term " Palaearctic " as here used excludes the whole of Wallace's Manchurian subregion , 
with the exception of the Amurland district. 
h 
