Mesoleius | BRITISH ICHNEUMONS. 161 

28. haematodes, Grav. 
Tryphon haematodes, Gr. I. E. ii. 177; Ste. Ill. M. vii. 240, @. Mesoleius 
haematodes, Holmgr. Sv. Ak. Handl. 1855, p. 137; lib. cit. 1876, p. 16; Voll. 
Pinac. xxiii, fig. 7; Brisch. Schr. Nat. Ges. Danz. 1878, p. 78 ;; Thoms./Q. E. xix. 
2075, 3 ?. 
Head posteriorly narrow; mouth and clypeus, and in, ¢ also, face, 
cheeks and nearly whole of frontal orbits, whitish ; clypeus Convex, punc- 
tate, apically rounded centrally, with lateral angles more distinct in Q. 
Thorax with humeral marks and lines below radices whitish; notauli in- 
conspicuous and apically obsolete; mesopleurae subrugosely alutaceous ; 
¢ mesosternum whitish ; petiolar area distinct but not occupying apical 
third. Scutellum red or laterally whitish. Abdomen black with seg- 
ments two to seven very narrowly white-margined apically, g sometimes 
with the third centrally white-marked ; basal segment twice longer than 
apically broad, with distinct basal scrobes and the discal sulcus narrow 
and slender or subobsolete; ventral plica whitish. Legs somewhat 
slender, red; hind tarsi and apices of their tibiae black; hind tarsi 
slender, their tibiae nigrescent, becoming basally paler, sometimes exter- 
nally infuscate throughout, never at all white-marked; ¢ with anterior 
coxae and trochanters, and apices of hind trochanters, flavescent or 
whitish. Wings with tegulae and stigma pale; areolet obsolete ; ner- 
vellus antefurcal. Length, 7—8 mm. 
The @Q face occasionally has two white vittae, its scutellum either red 
or laterally pale, and the mesosternum entirely black or laterally rosy- 
marked. Vollenhoven’s figure of this species, with pale hind tibiae is 
probably wrongly named, since one of its characteristics is the almost 
entirely nigrescent hind tibiae; another is the pale ¢ frontal orbits. 
It is said to extend throughout nearly all Europe, but has not been bred. 
Stephens’ examples from the London district are lost, though there is an 
unnamed female from his collection in Mus. Brit.; with a second from 
Lastingham in Yorks, correctly named by Desvignes. Bridgman records 
it from Heigham osier carr, near Norwich, and Bignell captured it at 
Bickleigh on 21st August. It is certainly rare with us, and I possess but 
a single female, which Tuck sent me from Finborough Park, in Suffolk, 
taken on Angelica flowers, on 24th September. 
29. maculicollis, Steph. 
Tryphon maculicollis, Ste. Ill. M. vii. 234, ¢. Mesoleius vigens, Holmgr. Sv. 
Ak. Handl. 1855, p. 142; Jib. cit. 1876, p.16; Thoms. O. E. xix. 2076, ?. M. 
parvus, Holmgr. Sv. Ak. Handl. 1855, p. 142; lib. cit. 1876, p.17, ¢. 
A black species with the mouth, clypeus, pronotal callosity, tegulae, 
apical margins of the abdominal segments narrowly, and the ventral 
plica, whitish. Legs red; hind tibiae testaceous with their apices and 
tarsi black. @ with whole sternum, face, frontal orbits, scape beneath, 
trochanters, anterior and underside of hind coxae, stramineous. Length, 
54—7 mm. 6 @. 
This species is very closely allied to J/. haematodes and I should con- 
sider it no more than a colour form of that species were it not that the 
mesonotal notauli are much more strongly impressed ; otherwise it appears 
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