Luryproctus | BRITISH ICHNEUMONS. 245 

areolet wanting, recurrent emitted some distance beyond submarginal 
nervure ; radius apically straight; nervellus intercepted a little above 
centre. Length, 9—11 mm. 
Grav. says the @ is more slender than that of £. memoralis, while 
British examples are stout (robustus, Holmgr.) and large, though, as he 
adds, the areolet is wanting and the basal segment less dilated apically 
with the petiole shorter and stouter. Pfankuch says Holmgren’s 
description agrees with the type, and that both varicornis and bisannu- 
la‘us are co-specific with it. The var. varicornis appears to mainly differ 
in having the 4th to 12th antennal joints rufescent ; they are black in 
all Britishers I have seen. The var. desannulatus has the recurrent nervure 
nearly continuous with the submarginal; Thomson did not recognise L/. 
defectivus at all. 
Very rare at beginning of August in Sweden (Holmgr.); a pair from 
Piedmont in Italy (Gr. /es¢e Pfank.) ; early in Sept. at Aix and Lyons in 
France (Fonsc.); Germany and Belgium. There are a couple in Mus. 
Brit., of which one was “ found in June at Darenth wood” by Stephens. 
Mr. Dalglish has given me one with red femora from Blair Moor near 
Glasgow during June, 1899; and I have taken a couple of males in the 
New Forest on 23rd and 24th August, 1go1, in a Lyndhurst garden and 
by sweeping Aentha hirsuta at Philips Hill. 2. varicornis was introduced 
by Bridgman (Tr. Ent. Soc. 1886, p. 357) on the strength of a male he 
found at Wimbledon in July, 1881; he says the head is less oblique 
posteriorly and the basal segment broader than in the type form, with 
base of hind femora red. 
7. atomator, Miill. 
Ichneumon atomator, Mill. Prodr. 1776, 158. Mesoleptus atomator, Gr. I. E. 
ii.92, ¢ ?. Euryproctus atomator, Holmgr. Sv. Ak. 1855, p.114, ¢; Brisch. 
Schr. Nat. Ges. Danz. 1878, p.70, ¢ ¢. Ipoctonus abdominator (sic), Thoms. 
O. E. xiii. 1432. J. atomator, Thoms. O. E. xix. 1987. 
A shining and finely punctulate species, with legs and abdomen en- 
tirely testaceous. Head not constricted posteriorly ; mouth and clypeus 
testaceous or flavous; clypeus apically broadly rounded and not im- 
pressed. Antennae subsetaceous, nearly as long as the body, infuscate 
with the underside entirely in 2, or only scape in 6, testaceous. Thorax 
black, with the metanotal areae incomplete. Abdomen as broad as 
thorax, oblong-ovate, fulvous; basal segment subscabrous, discally sul- 
cate, somewhat impressed beyond the central spiracles, apically dilated 
with the petiole not parallel-sided andin ¢ sometimes infuscate ; terebra 
hardly exserted, testaceous; @ anus Often narrowly black. Legs entirely 
flavidous. Wings normal, slightly clouded ; stigma and radius infuscate, 
radix and tegulae flavescent ; areolet wanting, or extremely obsolete and 
irregular; nervellus intercepted hardly below its centre. Length, 
6—8 mm. 
Instantly known by the entirely testaceous abdomen and legs in the 
present genus, though very strongly resembling Perilissus lutescens, 
Holmegr. 
It occurs in Germany as late as October, is found in Sweden and 
throughout central Europe. With us it is most common in marshy 
places, but no one has yet bred it; I suggest its host to be the Dolert 
that feed in Juncus stems. Claygate in Surrey in 1877 (Champion); a 
