Monoblastus | BRITISH ICHNEUMONS. 285 
1. neustriae, Schr. 
Ichneumon neustriae, Schr. F. B. ii. 304; Bechstein, Forstins. 145 ef 499, ¢ ¢. 
Tryphon neustriae, Ratz. Ichn. d. Forst. ii. 115, ¢. Monoblastus neustriae, 
Brisch. Phys. Ges. Kénig. 1871, p.90; Schr. Nat. Ges. Danz. 1878, p.96, ¢ ¢. 
Polyblastus femoralis, Holmgr. Sv. Ak. Handl. 1855, p. 203, ¢ ¢. 
Slightly shining, punctate and black with the mouth pale. Head trans- 
verse, not constricted posteriorly, punctate and black; frons apically 
subimpressed on either side; face longitudinally subelevated centrally, 
punctate and rarely black, usually flavous-marked above the undiscreted 
and apically rounded, black or flavous clypeus; mandibles testaceous, 
apically darker, with the teeth of subequal length; palpi dull testaceous. 
Antennae stout and a little shorter than the body, black with the 
flagellum dull ferrugineous beneath. Thorax stout, punctate, shortly pubes- 
cent and nearly as broad as the head; mesonotum convex, with notauli 
obsolete; pleurae punctate ; metathorax rugose, with five not very distinct 
discal areae. Scutellum normally convex and punctate. Abdomen hardly 
longer than head and thorax ; basal segment finely rugose, margined and 
black, with carinae extending beyond its centre and the intervening space 
concave ; second subalutaceous, transverse and apically broadly rufescent ; 
third red, often with black marks, alutaceous with its apex smoother; 9? 
anus testaceous ; terebra short, stout and pale. Legs pale red with only 
coxae and trochanters black, the hind tarsi often infuscate and all femora 
stout. Wings slightly clouded, radix testaceous, stigma infuscate and 
basally paler, areolet subpetiolate, radial nervure nearly straight; 
nervellus intercepted below its centre. Length, 6—7 mm. 
A stouter and more distinctly punctulate species than JZ. exstirpatorius, 
and at once known from it by the always entirely black scutellum. 
It is frequent in marshy places in southern Lapland, and Brischke has 
bred it in Prussia from larvae of Vematus citreus (= Pteronus melanaspis), 
though Ratzeburg’s record of it as bred from Bombyx Neustria on 17th 
May, 1838, is doubtless an error. Gaulle records it from France and van 
Burgst from Holland, but with us it would appear uncommon, though 
there is a full series from Shere in Capron’s collection; one from Corn- 
worthy in Devon (Marshall coll.), two from Peckham, near London (Tr. 
Ent. Soc. 1882, p. 158), Miss Chawner has given it me from the New 
Forest and Bridgman records it doubtfully from Brundall, near Norwich. 
2. palustris, Holmgr. 
Polyblastus palustris, Holmgr. Sv. Ak. Handl. 1855, p. 203, ¢ ¢. Monoblastus 
palustris, Holmgr. lib. cit. 1856, p.386; Brisch. Phys. Ges. Kénig. 1871, p.90; 
Schr. Nat. Ges. Danz. 1878, p.96, ¢ ?. Tryphon subfasciatus, Ste. Ill. Mand, 
Vil. ZO, 2. 
Shining, punctulate, pubescent and black with the mouth, clypeus, 
nearly the whole face and the tegulae flavidous; second segment apically 
and the legs testaceous or fulvidous with the coxae, base of trochanters, 
hind tarsi and apices of both their femora and tibiae nigrescent. 
Metanotum with five distinct areae, of which the areola is subrectangular. 
Two basal segments very finely rugose, the first subconstricted towards 
its base with distinct carinae. Length, 6 mm. 
