210 
HYMENOPTERA. 
contained large numbers of cells packed with Diptera ; a Mutillid (Mu- 
tilla discreta , Cam.), was reared from one of the cells. Bingham remarks 
that he saw a Crabro carrying oh Aphides, as do the European species 
and this is likely to be the habit of some of the above species. Nurse 
records rearing C. halucha, Nrse., from hollow reed stems in which it 
had stored “ houseflies.” (Jo. Bo. Nat. Hist. Soc. XV, p. 16.) 
G. ardens , Cam., was observed in Pusa to have stored its nest with small 
flies and two species of Crabro were observed carrying off aphides from 
a Capsicum plant in a house. 
Eumenid^e. 
Wings folded longitudinally , middle tibice with one spine 
at the apex , the claws dentate. 
These wasps include the small slender Odyneri measuring as little 
as a third of an inch in length and the large robust Eumenes which occa- 
Fig. 117. ---Eumenes esuriens with one finished 
AND THREE INCOMPLETE CELLS (SIC)j 
(From Horne.) 
sionally measure over an inch. The colouring is commonly warning 
and the females have a formidable sting. In some the petiole 
is well marked and long, in others it is less noticeable. The antennae 
are of moderate length, with 12 joints in the male, 13 joints in the female. 
The pronotum reaches the base of the wings; the legs are of moderate 
length and slender. All are winged in both sexes and the females are 
