12 
apical dorsal segment with a central impunctate line which is faintly 
shagreened apically; marginal cell rather pointed at its outer posterior 
extremity, the enclosing vein sloped towards base of wing on its upper 
portion, second submarginal cell with its apex distad of submarginal. 
The female, which has previously been undescribed, differs from 
that of inornata Say in the following characters :— 
The clypeus is broader and not so high, with a less distinct central 
emargination; the mandibles are stouter and shorter, with the grooves 
extending much farther towards apex, the one on under side ending very 
close to apex; the basal dorsal abdominal segment has a better defined 
subapical depression, and has irregular, widely spaced punctures on 
basal half; and the pygidium has a smaller impunctate space which is 
more or less distinctly shagreened. 
Originally described from Carlinville, Il, and represented in my 
material by many specimens from various parts of this state, even to the 
northern tier of counties. I have also seen examples—from the collection 
of N. Banks—taken at Chain Bridge, Glencarlyn, and Falls Church, Va., 
and at Sea Cliff, N. Y. A female in the collections here, from Spokane, 
Wash., is either this or a closely allied species. The dates on specimens 
show that the species occurs from the middle of May till the middle of 
July, with a few scattered examples up to the middle of October. 
TIPHIA INORNATA Say 
TIPHIA VULGARIS Robertson 
The males of the above species very closely resemble each other, but 
may be separated as follows: inornata has the mandibles toothed, the 
clypeus with a rather large emargination, and the sixth ventral abdominal 
segment with the greater portion of its surface with long erect yellowish 
hairs; vulgaris has the mandibles almost invariably simple, the clypeus 
with a weak emargination, and the sixth ventral abdominal segment with 
shorter subdepressed white hairs. 
The females are easily separated by the punctuation of the pygidium, 
which in inornata ceases about middle of disc, while in vulgaris it is 
carried to within a short distance of the margin. The last-named species 
is readily separated from its allies by the subopaque appearance of the 
ventral surface of the pronotum, due to the presence of many minute 
punctures between the larger ones. Both species have the basal half of 
first dorsal abdominal segment doubly punctate. 
Both species occur throughout Illinois and in the Eastern States, 
vulgaris being the commonest species affecting white-grubs in the 
vicinity of Urbana. I have seen inornata, or a species which I can not 
separate from it, from Florida. 
Both species appear to be largely confined to fields, especially pas- 
tures, and very few examples of either were taken in or near woodlands 
in 191%. At Galena, Ill., a series of both sexes of vulgaris was taken on 
