360 Trans. Acad, Sci. of St. Louis 
Agenia variegata. This species is recorded as bur- 
rowing in the ground. (Riley, Am. Nat. 8; 8. 1874.) 
This, however, needs verification, since no other record 
shows similar behavior for members of this genus; 
Bouvier says (Psychic Life of Insects, p. 190) that A. 
variegata closes the entrance of her nest with balls of 
spider web which she compresses into a tight wad, al- 
though he does not state what kind of nest this species 
makes. 
Pseudagenia nyemitawa. This wasp plasters a two- or 
three-celled nest on trunks or logs. (Williams, loc. cit., 
p. 98.) 
Pseudagenia caerulescens makes a little mud nest 
within the silken retreat of a jumping spider, the web 
of which is usually in a crack in a bamboo stump. (Wil- 
liams, loc. cit., p. 100.) 
Pseudagenia sp. had enlarged a burrow in a honey- 
combed log. Within, a short tunnel was found which 
contained three cells, each supplied with a spider. (Wil- 
liams, loc. cit., p. 101.) 
Pseudagenia macromeroides shows indications of a 
semi-social habit; the mud cells are placed in groups 
in sheltered places. (Williams, loc. cit., p. 102.) 
Pseudagenia okowa is a twig-nesting wasp. She par- 
titions the hollows of slender twigs into 2, 3 or 4 cells, 
and stores them with the delegged spiders. The parti- 
tions are of mud, and in addition the outer one is smeared 
with a gummy substance (Williams, loc. cit., p. 103). 
Thus we see that the genus Pseudagenia, more often 
called Agenia, although it belongs to a family of wasps 
that dig burrows, comprises for the most part potter 
wasps that build neat pots of various shapes a¢ 
_ cording to the species, in various localities, with or with- 
