3 
Tiphiae that occur so commonly at Havana, and that many species of 
Hemiptera, Orthoptera, and Coleoptera which are peculiar to sand regions 
occur also at Dubois though the soil is much heavier than at Havana and 
at similar localities. 
Very few imagines were taken on flowers in the sand regions, though 
I swept Chrysopsis, Monarda, and several less common plants. The 
flowers of wild parsnip and Angelica yielded many examples of the 
species affecting white-grubs at Galena and other northern points in 1917, 
and there are many records of similar habits in our office files relating to 
these species. 
GENERIC CHARACTERS 
The genus Tiphia has been separated by authors from Paratiphia by 
the absence of the first cubital cross-vein of the wing, and the slightly 
convergent sides of the metathoracic enclosure. ‘These characters, while 
fairly constant, are not altogether reliable, as many specimens of Tiphia 
have the first cubital present and the metathoracic enclosure is always 
narrowed posteriorly, though not subtriangular in shape. There are a 
number of species in Tiphia that have the first dorsal abdominal segment 
similar to that of Paratiphia—with a deep transverse linear groove at 
middle—so that in so far as the absence or presence of the groove is con- 
cerned it is impossible to separate the genera by the structure of this seg- 
ment. There is, however, on each side of the first segment in Paratiphia 
a conspicuous oval depression which is but slightly indicated in Tiphia. 
The principal distinctions between Tiphia, Paratiphia, and the new genus 
Neotiphia may be summarized ‘as follows :— 
Male with clypeus usually entirely or in large part white; first cubital trans- 
verse nervure always present; mouth-opening much longer than broad, extend- 
ing almost to back of head, the portion between the latter and posterior 
margin of mouth vertical; metathoracic enclosure subtriangular; first dorsal 
abdominal segment abrubtly declivitous anteriorly, with a deep transverse 
incision at middle, and a very distinct oval depression on each side; male 
hypopygium as in Figures 1, 2, and 3.............eeeee cece ee ees Paratiphia. 
Male with clypeus black; first cubital transverse nervure normally absent; 
mouth-opening much longer than broad, extending almost to back of head, the 
portion between it and back of head horizontal; metathoracic enclosure nar- 
rowed posteriorly but not subtriangular; first dorsal abdominal segment not 
abruptly declivitous anteriorly, without an oval depression on each side; male 
hypopygium as in Figures 4 and 6........+ esses seen escent neces .Neotiphia. 
Male with clypeus black; first cubital transverse nervure normally absent; 
mouth-opening broader than long, separated from back of head by a rather 
broad flat area; metathoracic enclosure slightly narrowed posteriorly; first 
abdominal segment not abruptly declivitous anteriorly, without well-defined 
oval depression on each side; male hypopygium as in Figures 5, 7, and 8.... 
