1922.) Our Knowledge of the Indian Wasps and Bees. 2) 
Family THYNNIDAE. 
e genera and species are listed by Turner in Genera 
Insectorum, 1910. Iswara, a genus closely allied to Myzine of 
the Scollidae, is now placed in that family. Many new species 
from the Indian region have not been described. 
Family ScoLipar. 
This group has been split up into a number of subfami- 
lies, many changes have been made in the generic names, an 
about fifty or more new species have been described since 
1897. Turner has some important papers in Ann. Mag. Nat 
Hist. 1908-09, and in Proc. Zool. Soc. Lond. 1912 he deals 
with the species of the genus Elis as understood by him. 
Family PomPiLIDAR. 
the paper previously mentioned Morice and Durrant 
showed that the typical genus Pompilus was found a few 
years earlier to have been called Psammochares and the family 
should therefore be called Psammocharidae. This is yet 
another instance of one of those unfortunate changes which 
are the result of a strict appliance of the rules of priority. 
The family is now one of the most difficult for the beginner to 
tackle and a definite concept of each of the numerous genera 
has not yet been published collectively. Over a hundred new 
species have been (often vaguely) described. The majority of 
the descriptions have appeared in Journ. Bomb. Nat. Hist. 
Soc., Ann. Mag. Nat. Hist. and Rec. Ind. Mus. from 1900-08. 
Family SPHEGIDAE. 
Modern authorities regard sections of this group as 
distinct families. = aoe 300 or more new species have been 
described and so genera. The literature is rather 
_ seattered. Full sort will be found in Aiyar’s catalogue. 
Family RHOPALOSOMIDAE. 
The position of this family has always been a source of 
contention among fy yubed heer a Morley in desc oe 

I Tre Ent. Soc., 1910, p. 386. The Indian Museum has the fe- 
male type cis Calcutta. 

