115 
meanderings give eager chase to the cockroach she had aroused ; 
she might finally succeed in catching and stinging it, and if undis- 
turbed (an improbable thing), would haul it about. the cage, 
especially about the screen sides and ceiling, backing up with 
her burden. Finally she would deposit it somewhere and search 
for a nesting site, choosing in the end one of the mud cells. 
This she would enter and re-enter and then depart for her prize. 
which she would drag for a way, drop it, and visit the selected 
cell again. She might do this several times, bringing the burden 
nearer at each inspection. When the roach finally reached its 
tomb it was deposited directly in front of and facing the latter. 
The wasp entered for a last inspection, 
turned around, reached out and pulled in 
her prey by its antennae. She remained 
some minutes within, when she came owt 
and commenced filling the cell with lumps 
of soil. This was quite a job, the wasp 
sometimes bringing in pieces as big or big- 
ger than herself, and far weightier. It is to 
be noted that she always used her mandi- 
bles and not her legs in filling a burrow or 
in clearing one. 
Thus acts an unmolested Dolichurus. But 
alas! what turbulent scenes filled that cage! 
Brigancage and grievous quarrels were the 
rule! Death sometimes resulted! Para- 
genia, 1f we remember her, is a wasp so 
peaceably disposed that she often nests in 
small colonies, where the wasps “butt in” 
EReMSGr Cocoon. of constantly, and with apparent safety, on 
Dolichurus stantoni, their neighbors’ business. The very anti- 
showing emergence thesis of this conduct is here manifest. A 
hole, xX 9. . . 8 . 
; dolichurid captures a roach; the scene oc- 
curs within eyesight of a larger wasp, who gives battle to the 
rightful owner. While this rough-and-tumble fight is in full 
swing, a third wasp, seeing the prostrate cockcoach, appropriates 
it and drags it afar. After the combatants separate, each rushes 
about anxiously, with upraised wings, seeking the roach. 

An inquisitive wasp enters a cell in which there is one of her 
busy sisters engaged perhaps in the delicate operation of laying 
her egg on the roach. The intruder hurries out, pursued by 
the very indignant occupant. Let even a wasp pass too near 
another’s cell, to one filling her tunnel, and there is a fight or a 
flight. Oftentimes a wasp will choose a certain cell or small part 
