The Sphegoidea of Nebraska 33 
10. Abdomen beneath black; flagellum mostly black........... 11 
11. Abdomen dorsally and mesonotum with large deep pits; first 
segment usually immaculate, second with a quite broad 
band basally which is widened laterally, remaining seg- 
ments with narrow apical bands; occiput sparsely punc- 
UIT CCIM Ee, Steer che sraccree ie eine alate. ciahaccyerctss Siniec ere oleh ineie erenele eeeTs(s gibbosus 
11. Abdomen and mesonotum with large punctures, but much closer; 
first segment with a widely interrupted (usually) band; 
occiput closely punctured; apical joint of male antennae 
strongly compressed and curved; insect larger and much 
more robust than the above species................ vertilabris 
Philanthus (?) psyche Dunning. 
1896. Philanthus psyche Dunning, Entomological News, vii, p. 288. 
1904. Philanihus psyche Viereck & Cockerell, Journal of the New 
York Entomological Society, xii, p. 143. 
Six specimens of a pretty little wasp from Glen, August 20, 
1906, I have identified as this species, although I am not certain 
of it, as it seems to be smaller than the description indicates. 
Some specimens have the scutellum white and some have it im- 
maculate. Only one has indications of the longitudinal yellow 
lines on the mesonotum as described by Dunning, but this char- 
acter is variable in any of the species possessing it. This and 
the three following forms seem to be very closely allied, and a 
thorough study of a larger series of these and their relatives, to- 
gether with the type specimens, will probably result in a marked 
reduction in the number of species. 
Philanthus albopilosus Cresson. 
1865. Philanthus albopilosus Cresson, Proceedings of the Entomolog- 
ical Society of Philadelphia, v, p. 91. 
1866. Philanthus albopilosus Packard, Ibid., vi, p. 56. 
Glen, August 17, 1906, at flowers of Solidago sp. (H. S. 
Smith) ; Warbonnet canyon, July 21, 1901, on Borage (M. Cary). 
Philanthus pacificus Cresson. 
1879. Philanthus pacificus Cresson, .Transactions of the American 
Entomological Society, vii, p. 32. 
1904. Philanthus pacificus Viereck & Cockerell, Journal of the New 
York Entomological Society, xii, p. 144. 
Glen, August 12 to 19, 1906 (P. R. Jones). 
320 
