Exochus | BRITISH ICHNEUMONS. 45 

quite possibly synonymous, especially as Thomson did not know the 
true Z. consimilis when erecting his /. nigripalpis. 
The present is said to be a common species with us by Bridgman, in 
introducing it as British (Trans. Ent. Soc. 1887, p. 375). He records it 
commonly from Norfolk, and Bignall took it at Bickleigh in Devon early 
in September; but | have found only two specimens, on flowers of Angelica 
sylvesiris in the marshes about Beccles on 13th August, 1898, and by 
sweeping reeds at Easton Broad on the coast of Suffolk on 23rd Septem- 
ber, 1900, and 5th June, 1905. 
19. flavomarginatus, Holmgr. 
Exochus flavomarginaius, Holmgr. Sv. Ak. Handl. 1854, p. 80,¢; lib. cit. 
1855, p. 311; Ofv. 1873, p. 64; Voll. Pinac. pl. viii, fig. 8; Brisch. Schr. Nat. 
Ges. Danz. 1878, p.107; Thoms. O. E. xix. 2133, ¢ 9. HE. flavolimbatus, Thoms. 
Deut. Ent. Zeit. 1887, p. 209, ¢ ¢. 
Head black with a pale lunule between the antennae; the vertical dots 
somewhat broadly, the lower half of the frontal orbits and whole or part 
of the external distinctly, stramineous; cheeks somewhat elongate. An- 
tennae black and apically attenuate; of ¢ ferrugineous. Thorax black 
with a pale callosity before radix; notauli small and distinct; metathoracic 
spiracles oval, costulae stout and areola discreted from basal area. Scu- 
tellum flavous-margined. Abdomen shining with carinae of basal segment 
not elongate; the second subtransverse with its disc glabrous and sides 
finely punctate; ¢@ with the second, third or fourth segments to seventh 
laterally stramineous. Legs red with tarsi of Q entirely concolorous and 
of @ stramineous; all coxae red; internal intermediate calcar less than 
double length of the external, hind ones not short. Wings slightly 
clouded with the stigma pale; radius with the apical abscissa slightly 
curved and much longer than the arcuate basal; fenestrae small; radix 
and tegulae whitish. Length, 5,—74 mm. 
Known by its postfurcal basal nervure, long calcaria, distinct notauli 
and pale frontal and external orbits, combined with pale coxae and strong 
costulae. ‘Thomson mentions a British variety with the meso- and meta- 
sternum laterally stramineous. 
This is certainly one of our commonest species, and is found through- 
out northern and central Europe. [It was known to Marshall as British ; 
Bridgman records it trom Norwich, Brundall and Kings Lynn, in Nor- 
folk; Bignell from Bickleigh in Devon, early in September; he also took 
it at Ivybridge and Clearbrook in July and August, 1890; and Marquand 
from the district of Lands End. 1| have some thirty specimens captured 
at the New Forest (Miss Chawner); Lynton in Devon in 1890 (Stanley 
Edwards); Nairn and Woolhope, early in June, 1902 (Yerbury); Lynhurst, 
in May and June (Adam); and Bury St. Edmunds in the middle of June 
(Tuck). It has occurred to me indifferently on birch and hazel bushes in 
woods at Bentley and Assington, in Suffolk, on bracken at the Wilverley 
Inclosure in the New Forest and in marshes by sweeping and on the 
flowers of Daucus carofa and on sallow in the Brandon marshes, Barnby 
Broad and Tuddenham Fen from 18th May to 19th Jnne, and during the 
latter half of August. Our only knowledge of its economy is furnished by 
W. H. B. Fletcher's rearing of it from Ludorea fruncicolella, probably at 
Worthing (Entom, 1884, p. 71). 
