NOTES ON BRACONIDE. 83. 
NOTES ON BRACONIDZ.—XI.* 
Tue Tripe RHoGADIDES, with ADDITIONS TO THE BritisH Lisr. 
By Cuaupe Mortey, F.Z.8., &c. 
Our knowledge of this interesting Tribe has advanced but 
little since the Rev. T. A. Marshall dealt with it in the Trans. 
Ent. Soc. just thirty years ago. The frequency of many 
species has since that time been enhanced, and there are a few 
which should be added to our indigenous fauna; two or three 
Continental authors have placed the distinctions of the species 
upon a more scientific footing, and the general breeding that 
has recently been effected in England from Lepidoptera, upon 
which the species are exclusively parasitic, render it well to 
revise the group. 
The Rhogadides may be known from the remainder of 
Braconide by the following characters: Head transverse, more 
or less constricted behind the eyes ; occiput distinctly margined ; 
mandibles not divergent and in repose forming, with the deeply 
emarginate clypeus, a subcircular aperture; abdomen sessile, 
with the suture of the second-third segments inflexible ; front 
wings with three cubital cells and the posterior (i.e. anal) 
nervure not interstitial. 
TABLE OF GENERA. 
(10) 1. Third segment not elevated; oral orifice normal. 
(7) 2. Suture of second-third segment distinct and crenu- 
late. 
(4) 3. Palpi with 3rd joint securiform; terebra 4 of 
abdomen . , : : PELECYsSTOMA, Wesm. 
(3) 4. Palpi filiform throughout; terebra hardly exserted. 
(6) 5. First abscissa of radial nervure longer than 2nd ; 
anus of @ retracted . ‘ Heterocamus, Wesm. 
(5) 6. First abscissa of radius shorter than 2nd; anus 
; normal : ; : y Ruoaas, Nees. 
(2) 7. Suture of second-third segment obsolete. 
(9) 8. Second cubital cell rectangular; abdomen longer 
than head and thorax . p PETALODES, Wesm. 
(8) 9. Second cubital cell trapeziform ; abdomen not longer 
than head and thorax . 4 CLINOCENTRUS, Hal. 
(1) 10. Third segment apically elevated ; oral orifice obso- 
lete . é ; : ‘ AvEmon, Hal. 
PELECYSTOMA LUTEA, Nees. 
A somewhat large and stout flavidous species, sparingly 
seattered through northern Europe, but nowhere common; 
it is said to have emerged from larvee of Papilio Machaon, Linn. 
* Cf. ‘Entom.,’ 1909, p. 96 e¢ ‘ Ent. Mo. Mag.,’ 1909, p. 209. 
