109 
away from this spot and thereby exposed six long-legged spiders, 
stung to immobility or nearly so. Most of these had the full 
number of legs; one was already almost consumed by a stout, 
nearly full-grown wasp grub; three others had each a small 
grub upon them, the fifth bore a wasp egg, while the sixth 
showed neither egg nor grub. On March 3, I again visited this 
locality and scraped up three more paralyzed spiders, two bear- 
ing an egg, the third a larva. March 5, two more parasitized 
arachnids were exhumed. Thus it is probable this single Pom- 
pilus analis provisioned these eleven spiders within two weeks. 
Individual depressions—they cannot be called burrows—were 
made for the reception of her victims, and the whole nesting 
place covered an area of perhaps more than a square foot of 
ground, more or less protected by the buttressed portions of the 
tree trunk. 
I saw P. analis carry home her victim, lay an egg upon its 
abdomen, and bury it. February 27, I saw her excavating. She 
would drag about large pieces of debris, then using her forelegs 
would dig with vigor in the loose soil and thereafter tamp 
down the slight excavation formed, by thumping it strongly 
and with vibrating speed, with the tip of her abdomen. The 
final result was merely a shallow funnel-like depression, and in 
such a cavity as this she buries her spider. Early in the after- 
noon of March 1, I noticed P. analis walking backwards, dragging 
a rather large and long-legged spider by one of its anterior ap- 
pendages to the nesting place at the base of the tree; here she 
placed it in a small depression and commenced digging nearby. 
I took up the spider and placed it upon my knee, but she per- 
ceived the act and pulled the spider off, and resuming her dig- 
ging, soon had a shallow funnel-like depression formed in the 
dry soil. To this spot she now dragged the nearby spider, and 
presently got upon its back, and grasping it with her legs, bent 
the abdomen beneath that of the spider and laid an egg near 
the base of the abdomen on the ventral side, the procedure occu- 
pying less than a minute, (Fig. 52). I immediately took up the 
spider to examine the pearly white egg and then replaced it in 
the depression. The wasp, however, did not know what to make 
of the interruption. Finally, when during her examination the 
ege dropped off the spider, she noticed this mishap and soon 
commenced digging and re-examining her prey. Half an hour 
was spent thus, except for two short trips that she made afield ; 
after the second of these she got down again to business. She 
finished another funnel, dragged the upright spider to the mid- 
dle of it, then she dug under her prey a little, and in the space 
thus cleared out repeated the process of oviposition, which again 
