() dean? 9 
There are also a few species, mostly of Indian genera—but 
in one case Achalarus only found elsewhere in the U.S.A.— 
which occur in the extreme east of the North Temperate 
region, such as Ismene aquilina, Satarupa nymphalis, Aero- 
machus inachus, and one small genus, Augiades, of which A, 
sylvanus is the type, which has its headquarters in the 
Himalo-Chinese sub-region. 
Eruiorran Recron.—Of Africa, as a whole, we have less 
knowledge than of any other region of so large an extent. 
Many collections and local lists of butterflies from various 
parts of tropical Africa have been made, but none of them 
have any pretension to being at all complete, and, as far as 
I can judge, they give no data sufficient to decide whether 
the sub-regions which are recognized for birds will hold 
good for butterflies. Cf. Kirby.* 
It seems, however, that the insects of tropical Africa are 
widely distributed from west to east, and extend on the south- 
east coast to Natal, whilst those of the more arid parts of 
North-Eastern Africa are comparatively poor in endemic genera, 
and rich only in species of Acrea and Teracolus. When we 
come to South Africa, a country so rich in its flora that it is 
considered by botanists to form a region apart, we find the 
poverty of butterflies even more striking. 
Mr. Trimen’s remarks on the subject are worth quoting.{ 
‘There can be no doubt that, with the exception of the 
‘‘ eastern coastbelt, from about the Kei river to Delagoa Bay 
‘‘ and Inhambane, South Africa is very scantily supplied with 
‘‘ butterflies.”’ ‘‘ So accustomed are we to associate butter- 
“ flies with flowers, that I well remember how much the 
‘“‘ dearth of these insects surprised and disappointed me when 
‘* first I contrasted it with the unrivalled variety and beauty of 
‘* the flora of the Cape district.” 
‘* | believe that when the Cape flora comes under investiga- 
‘« tion as regards fertilization by insect agency, it will be found 
‘‘ that a great proportion of its large and brilliant blossoms are 
ee eee to the visits of Diptera, and a good part of the 
¥* The ‘Buttartlics and Moths of Africa, a paper read before the V Ak 
Institute, June 8, 1889. 
+ South African Butterflies, vol. i., p. 42. 
