266 
underside of the apex of the abdomen, becoming always 
necessary with those species where the female is not 
furnished with an extended ovinositor. A difference is to 
be found between the hairs etc. of the antenne in some 
species, but they are so insignificant that they cannot be 
observed with the naked eye. 
With regard to the division of the group into Tricho- 
grammini and Oligositini, this was introduced by Forster, 
as previously mentioned, and has since been retained, but 
it is to be seen that several species of the genus Oligosita, 
which belong to the latter, and which should be disting- 
uished by the uniformly distributed pubescence on the 
wings, have as a fact the pubescence arranged in rows, 
so that this character is no longer of importance as a 
means of separating the groups. It is to be supposed that 
in a near future, it will be necessary to revert to other 
characters than the pubescence on the wings to make a 
rational division of these groups. 
Table of Genera. 
A. Winged forms. 
1. Surface of anterior wings from stigma to outer edge strongly 
haired, and the hairs or most of them arranged in regular 
rows. Fringe short or at all events not as long as half of wing 
at broadest. Antenna 5—9 jointed (Trichogrammini) ...... 2: 
Surface of anterior wings sparingly haired from stigma to outer 
edge, hairs not without a certain regularity. Fringe very long, 
longer than half of wing at broadest. Antenna 7-jointed. (Oli- 
SOSWINT): m we Een EEN TEL er 8. 
Surface of wings from stigma to outer edge strongly haired with 
thick hairs, placed without any regularity (NB. Asynacta) 
Fringe short. Antenna 7—9 jointed (Brachistini) ........ 9. 
2. Marginal vein not reaching costal margin..... Poropoea Forst. 
Marginal: veinreaching costal. margin \, an ee ee 3. 
3. Radius by being produced out on the surface of the wing for- 
MING a TEOMlar rare Pep seh. ee Trichogramma Westw. 
Radius notformine a’ regular arch FEAR ee a) ees eee 4. 
4:- Anterior “wings with short fringe)" > “oes ee 5. 
Anterior ‚wings\with” longer fringer 17. Re eon eee le 
