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HYMENOPTERA. 105 
Turgq. Very pale fulvous; covered with a silky and whitish 
down, with a blackish-brown and glossy spot on the abdomen. 
In the round, hard and tuberculous gall found on a species of 
Oak in the Levant, which is employed incommerce. By break- 
ing this gall we may frequently obtain the perfect Insect. 
C. quercus pedunculi, L.; Reaum., Insect., III, xl,1—6. Grey, 
with a linear cross on the wings. It pierces the blossoms of 
the male flowers of the Oak, producing round tumours which 
resemble little bunches of fruit. 
C. rosz, L.; Reaum., Insect., III, xlvi, 5—8; and xlvii, 1—4. 
Black; legs and abdomen, the extremity of the latter excepted, 
red(1). 
The fourth tribe, that of the CoaLcip14, Spin., only differs 
essentially from the preceding one in the antenne, which are 
geniculate, those of the Euchares alone excepted, and which, 
from the elbow, form an elongated or fusiform club, of which 
the first joint is frequently lodged in a groove. ‘The palpi 
are very short. The radial cell is usually wanting; there is 
never more than one cubital cell, which is not closed. The 
number of joints of the antenne never exceeds twelve. 
We may refer the various genera established in this tribe 
to the 
Cuaucis, Fab. 
These Insects are very small, and are decorated with extremely bril- 
liant metallic colours; most of them enjoy the faculty of leaping. The 
ovipositor, like that of the Ichneumons, is salient and frequently 
composed of three threads; the larve are also parasitical. Some of 
them, on account of their extreme minuteness, live in the interior of 
the almost imperceptible ova of Insects. Others inhabit galls and 
the chrysalides of the Lepidoptera. I suspect that they do not spin 
a cocoon. 
Some, in which the antennz always present eleven or twelve joints, 
(1) For the other species, see Linnezus; Oliv., Encyc. Méthod., article Diplo- 
lépe; Lat., Hist. Gen. des Crust. et des Insect., XIII., p. 206, and Gen. Crust. et 
Insect., 1V, p. 18; Jurine and Panzer on the Hymenoptera. 
Dr Virey has published some new observations on the galls produced by these 
Insects, from an MS. memoir of the late M. Olivier. 
Vou. IV.—O 
