108 
to conform with the profile of the spider’s abdomen. Length 
about 3 mm.; thickness .8 mm. <A cocoon dug up in the field 
was rather stout and of a tan color. In emerging the wasp had 
cut around the top of the cocoon, thus forming a neat circular 
lid. 
Pompilus analis FABRICIUS AND ITs PARASITIC RELATIVE, 
Xanthampulex (Ceropales) luzonensis ROHWER. 
P. analis: Length 11-19 mm.; black; tip of abdomen red, 
wings clear. 
X. lugonensis: Length 8 mm.; reddish. 
Pompilus analis is well distributed in the Indo-Malayan region. 
This wasp is particularly interesting on account of the loose 
funnel-like cape she makes in the soil to store her spiders 
in, and because of the fact that Yanthampulex, a smaller orange- 
colored wasp of the same family, robs the analis larva of its food 
supply and life by laying her own egg on the spider caught. 

Fig. 52. Vertical section through the funnel nest of Pompilus analis, 
showing wasp in the act of laying an egg on the spider, Heteropoda 
3/2. 
gemella, * 3/ 
I found but two nesting spots of Pompilus, and these were at 
the foot of trees. The first and largest was discovered February 
18, at the base of a large tree at the forest’s edge, where, having 
been attracted to this tree by an inaccessible Macromeris nest, I 
came across P. analis disguising one of her burial grounds by 
placing debris upon it. In comparison with her size, she dragged 
pieces of wood, soil and leaves of prodigious dimensions and 
weight to this spot, and other heavy material she would test by 
pulling at it, and if beyond her strength, it was abandoned 
for portable objects. The soil about here was loose and dry, and 
I wondered that a wasp would barely cover up her spider in this 
region of ants and other enemies. I brushed the soil lightly 
