73 
by Dr. C. V. Riley in 1874 (59), and its parasitic habits have since been 
occasionally referred to in literature. We have reared it from Tiphia 
cocoons collected in Illinois and Indiana, once from a cocoon collected 
by H. E. Smith at Hadley, Mass., and again from cocoons collected by 
J. A. Hyslop at Hagerstown, Md., and in all cases the beetles issued in 
July excepting the last collection—which issued May 15—and one from 
Mt. Vernon, Ill., which issued August 29. We have also reared a species 
determined by Mr. E. A. Schwarz as Macrosiagon S-maculatus Gerst. 
from a mixed lot of Tiphia cocoons collected at Lafayette, Ind., and 
Rockford, Ill., the adult in this case issuing July 1; and the same species 
was reared from the cocoons of a Ligyrus parasite, Campsomeris dorsata 
Fabr., by W. Nowell (53) in Barbados. Whether or not pectimatus and 
8-maculatus are distinct species is not agreed upon by systematists, the 
species being distinguished only by the elytral markings. 
It is supposed that these rhipiphorid beetles are primary parasites of 
Tiphia, and it is probable that the egg is laid on or near flowers fre- 
quented by Tiphia adults, or possibly on the Tiphia itself, and that the 
egg or the recently hatched rhipiphorid larva becomes attached to the 
wasp and is in due course deposited on the Phyllophaga grub at the 
same time that the Tiphia deposits her own egg. 
Lugger (46) speaks of a hymenopteron which is parasitic on Rhi- 
piphorus, and we have occasionally collected cocoons behind the plow 
which were pierced with small holes resembling emergence holes of a 
small parasite. 
It is interesting to note that the common English sparrow seems 
fond of Tiphia—at least in the 92 stomachs of this bird examined by 
Dr. Riley (61), 10 contained the remains of Tiphia adults. 
Tuer Banpep DiccEr-wasps (Eis spp.) 
Five species belonging to the genus Elis have been reared from 
cocoons collected in fields infested by white-grubs. Two of these, how- 
ever, are doubtfully mentioned as parasites, no proof of their habits 
other than circumstantial evidence having been obtained. The cocoons 
are to be found more or less common behind the plow, especially in 
fields where white-grubs occur in abundance. The life history of 
only one species (£. 5-cincta) has been studied, but it seems likely that 
other species of Elis will agree with it in all essential details. 
Exis 5-crncra Fabr. 
This scoliid wasp was first reported as a white-grub parasite in 
1912, under the name Myzine sexcincta Fabr., by Flint and Sanders 
(22), and according to their observations it was found as abundant as 
Tiphia in certain parts of Illinois. Although the present writer has 
never found it so abundant it is common in some localities and no doubt 
is a very important aid in the natural control of white-grubs. Several 
species of Elis are supposed to be parasitic on Phyllophaga grubs, but 
5-cincta is undoubtedly the most common where we have studied it, and 
