Polyblastus | BRITISH ICHNEUMONS. 293 

In Marshall’s own copy of Ichn. Europ., which I possess, he has termed 
this species a Polydlastus (I do not know upon what grounds) and places 
it in that genus in his Catalogues as the ¢ of P. zmfestus, Holmgr., un- 
known to the latter author. Gravenhorst says his ¢ is similar in con- 
formation and outline to 7rematopygus procurator, though without areolet. 
Pfankuch indicates the types of both 7. parvulus and 7. humilis, to which 
it is also compared, as lost; and Dalla Torre considers P. infestus to be 
distinct, as probably did Marshall later, since his g from “Lamport” is 
not placed with his females from Nunton in Wilts in his collection. 
Manger found two @ 4 in Silesia; Boheman took the typical ? in 
Lapland and Brischke records the same sex from Prussia. ‘Taken in 
June near Hertford” (Stephens); our only subsequent records are from 
Marshall, given above. 
3. Bridgmani, Parfitt. 
Polyblastus Bridgmani, Parf. E. M. M. xviii (1882), p. 251. 
Closely and finely punctate, pubescent and black with the mouth, face, 
scape beneath, mesonotal vittae and scutellum, flavous; legs and centre 
of abdomen fulvidous. Antennae longer than body. Thorax gibbous 
and black with two raised lines extending from the anterior radices con- 
vergently to the scutellum, a line before a dot before radices and a 
callosity below the latter, flavous; metathorax coarsely punctate and 
pubescent with the areola subentire. Scutellum and postscutellum 
entirely flavous. Abdomen deplanate, subparallel-sided and apically ob- 
tuse ; basal segment discally sulcate; segments three and four entirely, 
the second apically and thyridii, fulvous. Legs fulvous with anterior 
coxae and trochanters paler; base of femora narrowly nigrescent ; hind 
tarsi and apical half of their femora black. Stigma and radix black, 
tegulae flavous; nervellus intercepted below its centre. Length, 6} mm. 
There is little beyond colouration in Parfitt’s description and no one 
has since noticed this species which, if relegated to its correct genus, is 
remarkably distinct in its pale scutellum and mesonotal vittae. He is a 
little vague as to the colouration of the two basal segments, and as to 
whether it be the hind femora or tibiae which are apically black. No sex 
is indicated; Dalla Torre terms it 9, which is improbable since the 
antennae are unusually elongate, the abdomen narrow and no terebra is 
referred to. 
Its author adds “I captured this species in a field of wheat near Exeter, 
in July, 1881, and have named it, asa slight mark of esteem and appre- 
ciation of the work done in this neglected group of British insects, the 
Ichneumonidae, by Mr. J. B. Bridgman, of Norwich.” 
4. unicinctus, Bridg. 
Polyblastus unicinctus, Bridg. Trans. Ent. Soc. 1889, p. 433, ?. 
Shining and smooth, finely white-pubescent and black with the mandi- 
bles flavous, second segment castaneous, and the anterior legs mainly red. 
Antennae about as long as the body. Metanotum short, with three areae. 
Scutellum not elevated. Basal segment discally subsulcate, double length 
of its apical breadth which is one-half broader than its basal; second 
segment castaneous and, like the following, transverse; terebra exserted, 
