366 Professor E. B. Poulton on 
HYMENOPTERA. 
Ichnewmonidex ; : , : : Bi 3) 
.. {Hive-bee : A a2, 
ey lores Anthophila : hab 
Diploptera } : 3 
LPossores zi 
Hleterogyna . 5 
dont _ Ont a 
DIPTERA. 
7-7 {QP eating fofownsp. . : 1 
Asilidee| he a sp. different from captor 1 
Syrphidex ; : 2 
Sarcophaginx 1 
TOTAL 5 
Comparing this analysis with that of all the recorded 
prey of Asilidx, we find no examples of D. diadema attack- 
ing Orthoptera, Neuroptera, Homoptera, or Lepidoptera, 
and only a single instance in which Hemipterous prey was 
selected. Rather less than } of D. diadema’s captures 
were selected from among the Coleoptera, and an equal 
proportion from the Diptera. The great majority of the 
victims, # of the whole, were Hymenopterous, and of 
these about half belonged to the Anthophila. The 
numbers of these latter are inflated by the abundance of 
the hive-bee and probably by the fact that this artificially 
protected species is extremely abundant im certain locali- 
ties, and especially easy to capture. Probable evidence of 
the comparative helplessness of the hive-bee is afforded 
by the following considerations. The sexes are recorded 
in 42 out of the 45 tabulated examples of this Asilid: 30 
were females, 12 were males. The smaller weaker males 
selected upon the whole smaller weaker victims than the 
females. But in 8 cases out of the 12 the comparatively 
large and heavy hive-bee worker was found in the 
clutches of a male diadema. As regards the female also, 
the 9 hive-bees were considerably larger than the average 
of the other victims selected by this sex. (See also p. 362.) 
The Courtship of Dasypogon (Selidopogon) diadema. 
Only a single pair were observed in cotéw, both male 
