82 
Psyche 
[April 
Family Crabronidce 
Solenius ( Crabro ) interruptus Lepeletier. One specimen, 
July 17. Nests in wood. 
Blepharipus nigricornis Provancher. Five specimens, doubt- 
fully of this species, July 17-September 26. This nests in wood 
also. 
Family Trypoxylonidce 
Trypoxylon frigidum Smith. One specimen, July 18. 
in wood. 
Family Pemphredonidce 
Nests 
Pemphredon tenax Fox. Two specimens, probably this 
species, July 26. 
Pemphredon angularis Fox. One specimen, September 26. 
Stigmus americanus Packard. Two specimens, September 26. 
Passaloecus annulatus Say. Four specimens, July 20-26. 
This and the preceding three species all build their nests in wood. 
Family Hylceidee 
Hylceus ( Prosopis ) modestus Say. Two specimens, July 18- 
August 8. 
Family Megachilidce 
Megachile relativa Cresson. One specimen July 17. This 
and the preceding bee nest in wood. 
Diptera 
Sixteen species were collected, distributed in a number of 
families. My friend, Professor A. L. Melander, has been so good 
as to identify all of these except the Phoridse. 
Family Itonididce 
One specimen, July 16. Not in good enough condition for 
more accurate determination, but probably a xylophagous form. 
