NATURAL HISTORY, TORONTO REGION 
Pemphredonidae (Pemphredonids). 
Psen niger, Pack. 
Passalaecus mandibularis, Cress. 
Sphecidae (Thread-waisted Wasps, Mud-daubers, etc.). 
Sceliphron cementarium, Dru. 
Chalybion coeruleum, Linn. 
Sphex communis, Cress. 
“ ~ conditor, Smith. 
luctuosa, Smith. 
procera, Dahlb. 
Ammobia ichneumonea, L. 
Isodontia philadelphica, Lep. 
Philanthidae (Philanthids). 
Cerceris clypeata, Dahlb. 
““ nigrescens, Smith. 
Eucerceris zonatus, Say. 
Philanthus bilunatus, Cress. 
. solivagus, Say. 
Bembecidae (Bembecids). 
Stictica ventralis, Fab. 
Bembex fasciata, Fab. 
Microbembex monodonta, Say. 
Gorytidae (Gorytids). 
Gorytes epphippiatus, Pack. 
Crabronidae (Crabronids). 
Crabro pegasus, Pack. 
“ aciculatus, Prov. 
Solenius singularis, Smith. 
“interruptus, St. Farg. 
384 
[7 
ce 
