THe HyMeENopTERA OF MINNESOTA 229 
NOMIIDAE 
Tegulae very large; glossa lance-linear, acuminate, shorter than mentum; man- 
dibles bidentate, not bevelled; posterior angle of mandible not before posterior line of 
eye; clypeus hardly protuberant; labrum usually small, concealed except at base 
and with a basal process, metathorax produced beyond postscutel. 
The type genus Nomua is a large one. Nomia (Eunomia) heter- 
opoda Say occurs in Minnesota. 
MACROPIDAE 
Same as Dufoureidae, but labrum not free from mandibles and not as large as' 
elypeus; hind tibia and metatarsus of equal breadth. 
The genus Macropis occurs in this state (collected on Indian Hemp 
along lake shore, St. Louis Co., by H. L. V.) WM. ciliata Patt. is some- 
times found on Lysimachia terrestus. 
PANURGIDAE 
Same as Macropidae, but 
hind metatarsus invariably 
narrower than tibia; margin- 
al cell truncate toward front 
edge of wing. 
We figure Calliopsis 
sp. and Perdita sp. col- 
lected in Minnesota. Pa- 
nurginus has also been 
Ape 
Fig. 119. Calliopsis sp. 
taken here on aster and gold- 
enrod (Rock, Fillmore and 
Martin Cos. in Sept.), Calh- 
opsis andreniformis Sm. oc- 
curs in this state, as does also 
Panurgus sp. Fig. 120. Perdita sp. 
NOMADIDAE 
Females and most males with a flat triangular area on apical dorsal abdominal 
segment; clypeus protuberant, or mandibles beveled so as to show all of labrum or 
a great portion of it; labrum large without a basal process, tongue filiform; first and 
second joints of labial palpi flat; first portion of sub-discoidal vein shorter than third 
portion of discoidal vein. 
Small, not very hairy bees, somewhat resembling wasps. They 
are parasites in the nests of other bees. In accord with their parasitic 
