124 
noteworthy, however, that even though a cell be completely built, 
so long as it contains no spiders at the close of day it is left open. 
Sometimes when spiders are slow in coming, a temporary plug 1s 
put on for two nights in succession, the plug being removed in 
the morning in about five minutes’ time. 
The mother wasp, hard worker that she is, undoubtedly se- 
cures sufficient food at flowers, and such meals may partly ac- 
count for her irregular working hours. But this specimen was 
fortunate in eventually discovering a jar of honey on a nearby 
table; to this she helped herself frequently and with evident 
relish; I took advantage of her docility and managed to have her 
crawl on my finger and there feed at a drop of honey. 
My observations on this species were chiefly in July and 
August, 1917. 
Chlorion aurulentus (Fabricus), var. ferrugineus (Lepeletier). 
Length 27 mm.; black; head and part of thorax with golden 
brown pubescence; legs reddish, wings iridescent purple. 
During July and August this large reddish brown wasp is 
noticeable because of her fondness for human habitations; she 
may often be seen hunting for her prey about the walls and ceil- 
ing of Nipa houses, and. small colonies frequently nest in the 
dry soil sheltered by eaves, or the wasp may even burrow in a 
shed or stall. 
C. aurulentus excavates sev- 
eral rather shallow tunnels, ap- 
parently one-celled, which she 
stores with Gryllacris brevispina 
Stal., a brown tree locustid, (Fig. 
Fig. 60. Gryllacris brevispina, prey 60). The capture of the lat- 
of Chlorion aurulentus var. Nat- De : : 
EA iatre: ter is a rather interesting specta- 
cle. The prey, though of smaller 
size than the wasp, is a stoutly-made carnivorous insect, which 
feeds by night, hiding during the day in leaf-roller nests whose 
caterpillar occupant she has probably eaten, in the hanging 
bunches of the leguminous pods of Leucaena glauca (L) (Jpel- 
ipel) or among dried leaves on trees or shrubs. The loud-buzz- 
ing Chlorion visits such objects as the above, and locating a Gryl- 
lacris, proceeds to eject it from its place of concealment : but the 
hunted insect is loath to get out and the hymenopteron, not 
anxious to enter, tries various devices whereby she may safely 
sach her prospective prey. One wasp searched the curled 
ae dead leaves on a coffee bush. She finally selected a leaf, 

