216 SEVENTEENTH Reporr STATE ENToOMoLocIst oF MINNESOTA—1918 
PREOIMUT Pep yjley 
Vay SOPH ORLLA Jobe ScusfefVuimn 
AOL C/E 
Oa \ \ LTCSEGUTIL O17 
\ ‘ \ | SV CTHIOM LMI 
/ | hia 
Ta 
F FOOSE 
L7CSCQOISI CL IMM 
) ef GOlCliea 
Fig. 108. Thorax of Chlorion (A.) ichneumoneuin.— From The Hymenoptera of Conn. 
4 I 
NYSSONIDAE 
Labrum entirely covered by clypeus, or at most with only apex visible; meso- 
sternum normal, not produced into a forked process posteriorly ; middle tibiae with 
two apical spurs; abdomen sessile or 
sub-sessile, without a constriction be- 
tween the first and second segments. 
Nysson, Alyson, Gorytes, and 
other representative genera nest 
in sand. We have but little 
knowledge of their habits. 
The following species are 
found in Minnesota: Pseudopli- 
sus phaleratus Say, Nysson mel- 
lipes Cress., Gorytes albosigna- 
tus Fox, G. canaliculatus Say, 
Alyson  trianguliferum  Prov., 
A. oppositus Say, A. melleus 
Say. 
Fig. 104. Nysson aequalis Patten. 
