Orthocentrus | BRITISH ICHNEUMONS. 6] 

flavidous; pleurae smooth, metanotum with three elongate areae. Abdo- 
men subdeplanate, and but slightly compressed in ? towards anus; basal 
segment subparallel-sided, aciculate-rugulose, impressed on either side 
beyond centre, with slender carinae extending to apex; second aciculate- 
rugulose with an impressed transverse line on either side beyond centre, 
and piceous with the apex dull testaceous; third basally aciculate or 
alutaceous, impressed like and concolorous with the second; remainder 
smooth, pubescent and immaculate; venter stramineous, terebra not 
exserted. Legs of ¢ testaceous with the anterior coxae and trochanters 
stramineous, and hind coxae and femora sometimes more or less infuscate 
above; of Q stouter and red with hind coxae often infuscate above. 
Wings slightly clouded; tegulae pale, stigma always infuscate; radial 
nervure apically straight and basally curved; areolet pentagonal, some- 
what small and strongly constricted in front. Length, 4—5 mm. 
It differs from O. profuberans, Holmegr., in having the face less promi- 
nent, the internal radial nervure longer, areolet smaller, the @ capital 
—-—-_---_ ee 
—<— 
= = ee 
I} =o 
colouration and @ distinct genal sulcus; it is often double the size of 
O. monilicornis, Holmgr., with the head more buccate, antennae stouter 
was basal flagellar joint shorter, the two basal segments rugulose with 
more distinct carinae, areolet larger and legs paler. It may be known 
from O. Radialis, Thoms. (anomalus, Gr. part), by its infuscate stigma and 
basally curved radius; from QO. s/rigafor by the hind pulvilli exceeding the 
claws in length, and entirely pale venter; and from both O. a/fenuatus, 
Holmgr. and O. pefiolaris, Thoms., by the face being simply and not 
granulosely punctate. 
Itis uncommon in Sweden (Holmgren), Germany (Grav.) and France 
(Gaulle, who says it preys upon the Longicorn beetles Sapferda scalarts 
and a species of /eiopus). Hope took two males at Netley in Shropshire 
of the form anomalus, Gravenhorst. It is common in Britain during the 
summer; Capron took many at Shere in Surrey, Edwards has found it at 
Lynton in Devon, Marshall at Govilon in Wales, Cornworthy and Botus- 
fleming in Cornwall; and it has occured to me during June in my garden 
