177 
CONCLUDING REMARKS. 
Approximately 182 species of aculeate wasps (including a few 
Bethylidae) were collected in the Philippines, and of these 52 are 
treated biologically in this paper. The list is as follows: 
Species. 
Retiylidae se see acta 5 
Milymnidae: oreo st oo 6 All belong to Methoca. 
Mibttialinidaes sms aes ac 8 
Scolticdae fracas ai. chs 15 
Psammocharidae (Pom- 
pultclaeypeta sare ete erie = 54 Of these, 20 are Pseudagenia or 
related mud-workers. 
ZAG UCIG AC Aas aes 5: 3 
SIOUNSCG HIG AEE n onereeie eertie 15 
IDA SORTS. Re Octo aan 19 
Crabromidae fea. if oa: 7 
dinvpoxylominae ss... -). 8 Trypoxylon 6, Pison 2. 
Rempuredonidae 2.2.4. 1 
Vine sid aes austen 5 
Bemibecidae yan ask nee. 4 
INWSSOMIGAe "So ocne cae 1 
(GDS OVS te CTs sain Be ea ae 1 
Genceridaenmims sen ata 5 
tiimMeminae aes aoticn or 14 
NWieSpindes aso at 11 
MNO tale ney accent 182 
The Psammocharidae furnished 15 species for biological data, 
the Sphegidae 8, and the Eumeninae 6. 
Some of the wasps, notably the highly-specialized genus Steno- 
gaster, are partial to the shady forests; others, as some Psammo- 
charidae and Larrinae, seem to prefer the hotter and more open 
lowlands, while others still, as various Eumeninae, are at home 
in either environment. 
A number of wasps hunt or build in and about the bamboo 
and palm houses, especially when these are in the vicinity of a 
woodland. These dwellings are very open, and their timbers 
often pierced by the borings of small beetles, the numerous bam- 
boo uprights regularly perforated for the support of other 
framework, and the thatching of Nipa palm leaves offer inviting 
places for nest-building. Thus in the house in which I lived for 
over a year, and which was situated on the edge of the Makiling 
forest, at least 20 species of wasps nested or sought their prey 
