Hymenopterous Parasites of Coleoptera. 49 
by Ratzeburg from this beetle. Marshall adds (Bracon- 
d’Kurop. i, 187) Collastes braconius to the list of its 
enemies; and Brischke gives Sigalphus pallidipes, Nees, 
“aus Larven von Orchestes fagi erzogen.” 
196. Orchestes ilicis, Fab. 
There are no exact records of hymenopterous parasitism 
upon this beetle, though Nordlinger has thrice bred 
Chalcids from 0. ilicis in company with O. quercus: thus 
we find both sexes of Hulophus fumatus (Ichn. d. Forst. ii, 
156) bred from oak leaves in which these two species of 
weevils were feeding; Hntedon medianus (/.c. 169) bred 
from both or either; and Plevomalus Jouanensis (1. ¢. 199) 
bred in the same way at Grand Jouan. - 
197. Orchestes salicis, Linn. 
Upon this species prey Lntedon orchestis and E. punctatus, 
which were both bred, together with a Pteromalus, by 
Reissig on Ist October (did. cit, 1, 160 et 165); £. wnico- 
status, of which one specimen was bred from this host 
by Bouché (ii, 163); and Ratzeburg further records #. 
medianus as preying upon it in France. 
198. Orchestes scutellaris, Gyll. 
Giraud thrice bred Chalcids from this species (Ann. Soe. 
Fr. 1877, pp. 432-4), which were Plewrotropis orchestis, Gir., 
Tetrastichus frontalis, Nees, and 7’. orchestis, Forst. 
199. Orchestes quercus, Linn. 
The parasites bred in Germany from this common weevil 
(Ichn. d. Forst. i, 23, revised and extended 1i, 213) are very 
numerous, comprising Jschius striolatus, Hntedon confinis 
and £. ? luteipes; Ratzeburg bred one ¢ of Pimpla alter- 
nans (ii, 92), nearly certainly from this host, among other 
parasites ; Polysphincta latistriata (4, 120) bred from this 
weevil in the epidermal bladders on the white-spotted oak 
leaves. Microgaster breviventris,* (11, 51) bred on 20th 
July from Curculio quercus, after most of its other parasites 
had emerged; both sexes of Sigalphus caudatus (ii, 25) 
from oak leaves in which this weevil lived and from the 
same host by Nordlinger on 12th June; both sexes also of 
Spathius clavatus “" (11, 42) were obtained on26thJune from 
oak leaves infested by this beetle. Both sexes of Hlachestus 
TRANS. ENT. SOC. LOND. 1907.—PARTI. (JUNE) 4 
