101 
femora. In habits she resembles P. caerulescens, for she also uti- 
lizes the more or less cylindrical silk nests of attid spiders as a 
shelter for her mud cells, (Fig. 48). These webs were quite com- 
mon on ornamental shrubs, es- 
pecially Croton (Cordaeium), 
a couple of the tough leaves or 
a rolled-up one concealing the 
nest. The spiders’ nests are 
from about 11% to 2% inches 
long, and the wasp places 
from two to four cells, usually 
arranged in a string, within 
this tube. Pseudagenia uses 
the spider’s doorway in bring- 
ing in her prey and balls of 
mud. She does not appear to 
molest what spider egg-co- 
coons there may be present. 
In one case a web sheltered 
also a one-individual Poly- 
rhachis ant nest, but this small 
jug-like affair, the work of 
the queen, was separated by a 
fine web from the body of the 
tube. 
= 5 
Fig. 48. a, Croton leaf with edges The mud cells (Fig. 48, d 
trimmed to expose silken retreat of and b) are short and blunt; 
jumping-spider (Kugasmia sp.). the cocoon within is thin and 
Towards the petiole the retreat is tan color and 8 mm. long, and 
occupied by the nest formed by a the pupa well armed with ab- 
queen ant of Polyrhachis sp. Three | ae , RE i ee a 
Pseudagenia cells are shown within, @OMmal and other processes. 
The opening to the nest is towards Notwithstanding the fact that 
the top of the figure. b, Cells the Pseudagenia cells are well 
showing cocoon of Pseudagenia; hidden in the spider’s web. a 
e, Cell with cocoon of an ichneu- S28 6 iat 
monid parasite; d, Cells of Psey- black and white ichneumonid 
dagenia. b and @ X 4/3; other Wasp gains access to them and 
figures reduced. parasitizes them heavily, (Fig. 
AS, c). Hence the reason 71 

reared none of the architects. 
Pseudagenia sp. 
Lower Makiling Forest, August 17. While observing /Hylo- 
liris mandibularis nesting in a large decaying tree trunk, I noticed 
a small spider-wasp enter a hole in the soft wood. Some saw- 
