276 BRITISH ICHNEUMONS. | Prionopoda 
3. glabra, Bridg. 
Prionopoda glaber, Bridg. Trans. Ent. Soc. 1886, p. 360, 3°. 
A stout, pubescent, subcylindrical, black species with only the 
abdomen except basally and anterior legs red; @ face and clypeus flavous. 
Head as broad as thorax; clypeus apically rounded; face griseous- 
pilose and punctate, of ¢ immaculate, of 9 entirely with clypeus 
and palpi flavous. Antennae as long as body with flagellum fulvous 
beneath, darker in @. Thorax with obsolete notauli and subglabrous 
mesonotum, mesopleurae punctate; metanotal areae distinct, costulae 
wanting; areola elongate, centrally subexplanate and usually apically 
entire; petiolar area longitudinally carinate centrally. Scutellum hardly 
~convex. Abdomen nearly cylindrical, nitidulous and red with basal seg- 
ment and often base of second black, anus often infuscate or nigrescent. 
Hind legs black with apices of trochanters and sometimes base of tibiae 
testaceous ; anterior legs testaceous with coxae, trochanters and usually 
base of femora black. Wings slightly clouded, stigma nigrescent, tegulae 
stramineous or piceous; areolet petiolate, obliquely subcircular with its 
outer nervure pellucid below; nervellus intercepted one-third from its 
apex. Length, 7—10 mm. 
Superficially extremely like a Zryphon, with which it doubtless used to 
be mixed, but with the tarsi pectinate and abdomen basally narrower. 
Marshall referred this species, in his collection to Zrvphon nigripes, 
Holmgr., and some such synonymy may be anticipated. 
Bridgman took the typical sexes at Norwich at the end of July, 1879, 
which is the latest known English date. It has only occurred to me 
from 14th June to 27th July, almost always upon the flowers of Heracleum 
Sphondylium, where it invariably puts in an appearance on the coast cliffs 
at Southwold and Covehithe. I have, however, also swept it from willow 
at Barton Mills, from oak in Staverton Thicks, and taken it both in the 
centre of Ipswich, and on the windy downs behind Brighton. It is a 
common species, though not yet recognised on the Continent, and has 
been found by Marshall at Nunton, by Elliott at Heacham in Norfolk in 
July, and at Birnam in Perth on zoth July, 1907, by Piffard at Felden and 
by Capron commonly at Shere in Surrey. 
LATHROLESTUS, Thomson. 
Thoms. O. E. ix. 911 et 916; (?) Lathrolestes, Foérst. Verh. pr. Rheinl. 1868, p. 196. 
Size small. Vertex never transcarinate before occiput, often centrally 
elevated ; clypeus discreted. Antennae as long as body, pilose, with the 
scape short, nearly transverse and the pedicellus large; flagellum not 
centrally dilated. Metathorax with at most the petiolar area entire; 
mesopleurae shining, smooth and very finely alutaceous. Abdomen sub- 
sessile; first segment deplanate, broad, somewhat short and _ basally 
subcarinate; second segment transverse; terebra arcuate, generally 
somewhat long and stout. Tarsi not incrassate, their claws pectinate. 
Stigma broad; basal nervure arcuately vertical and the radial basally 
curved. 
This small genus was utilised by Thomson for the reception of Holm- 
