^Eir AAD LITTLE KNOWN INDIAN BOylBYLIlDjE. 
631 
present genus. The one labelled “ ? binotala Macq.” does not agree with 
Macquart’s description of that species. 
Exoprosopa, Macq. 
This is a very rich and rather heterogeneous genus, as Professor Bezzi remarks 
in Tr. Ent. Soc., 1911, p. 636. It will probably be split up eventually, and some 
of the species at present included in it will have to go elsewhere. In working 
out my specimens I was much puzzled by a species that occurs at Mount Abu, 
which has the neuration of Exoprosopa, but the wing pattern of Thyridanthrax. 
Looking over some insects which had recently been returned to the British 
Museum by Professor Bezzi, I found that he had described it as a Thyridanthrax 
from Africa, where it is widely spread. I also note that he now places Loew’s 
Exoprosopa Iceta in Thyridanthrax, although he recorded it as an Exoprosopa in 
Tr. Ent. Soc., 1911, p. 645. 
When the Indian dipterous fauna becomes better known, the number of species 
of Exoprosopa that occur in that country will certainly be increased by numerous 
additions. There are,bothintheBritishMuseumand in my own collection, a number 
of specimens which undoubtedly belong to undescribed species, but in most cases 
they are in indifferent condition, and to describe new species frcm examples more 
or less denuded of their pubescence is only to increase the difficulties of future 
students of Diptera. As regards the generic characters Brunetti makes a slight 
slip on p. 190 of Vol. I. His statement “ all tibiae without spinules ” should 
read “ fore tibiae ^idthout spinules, ” as most of the species, if not all, have spinules 
on the intermediate and posterior tibiae. 
The following key to the species recorded from India is based as far as possible 
on Brunetti’s table of species on pp. 190-192 of his work. It must not be taken 
as dividing them according to their affinities, but it ought to assist a collector 
to name his specimens, unless he obtains anything new to India. In preparing 
the key I have relied on Brunetti’s descriptions as regards the following species 
— flavipennis, otylata, puerula, annandalei, brahma, and vitrea. All the other 
species are represented either in the British Museum or in my own collection. 
Key to th£ Indian Species of Exoprosopa. 
1. 
1st posterior cell closed 
O 
Do. open . . 
.. 9 
2. 
Wings bright yellow at base . . 
.. 3 
Wings not bright yellow at base 
.. 5 
3. 
Wings with two browm bands 
. . fiammea, Brun. 
Wings with only one brown band 
.. 4 
4. 
Abdomen with the ground colour black 
. . flavipennis, Brun. 
Do. do. red 
. . tamerlan, Portschin- 
sky. 
5. 
1st posterior cell long stalked . . 
Do. short stalked or closed on 
.. 6 
the margin 
.. 7 
6. 
4th longitudinal vein interstitial with cross 
vein 
connecting 3rd and 2nd longitudinal veins 
. . inter siitialis, n. sp. 
4th longitudinal vein not interstitial 
. . fusconotaia. Beck. 
7. 
Wings very dark brown at base 
. . siva, n. sp. 
Wings not dark brown at base 
.. 8 
8. 
Apex of wings hyaline . . 
. . albida. Walk. 
Do. more or less infuscated 
. . *abjecia, n. sp. 
9. 
Wings wholly black or blackish 
. . laUpennis, Brun. 
Wings not wholly black or blackish . . 
.. 10 
* This species sometimes has the 1st posterior cell open, and therefore appears 
again below. 
