Perilissus | BRITISH ICHNEUMONS. 265 

Prussia from larvae of Phyllotoma microcephala and of a Fenusa, probably 
F. pumilito, on elm; and Gaulle records it from France, adding both 
Entodecta pumila and Fenusa pygmaea as hosts. It was introduced as 
British by Bridgman (Entom. 1880, p. 54) who took it at Norwich and 
tells us (Trans. Norf. Soc. 1894, p. 625) that it has been bred by Fletcher 
from Phyllotoma melanopyga, probably at Worcester. 
13. minutus, Bridg. 
Perilissus (Luphyroscopus) nigricollis, Thoms. O. E. ix. 915, ¢ 2 (?). P. 
minutus, Bridg. Trans. Ent. Soc. 1887, p. 370, ¢ ?. 
A small but not slender black species with frontal orbits, mouth and 
legs flavo-stramineous ; segments two to three or four narrowly red 
apically; @ face, cheeks, temples, pronotal marks and basal mesopleural 
line, stramineous. Length, 34—4$ mm. 
It is unnecessary to here repeat Bridgman’s detailed description (Joc. 
cit.) since this species differs so little from PP. Zufeolator as to appear 
nothing but a small form of it, though sufficiently distinct in the black 
vertex and @ face, flavous ¢ scape, obsolete metanotal areae of which 
the petiolar carina alone is strong with areola hardly indicated and cos- 
tulae wanting; parallel-sided petiole, not sulcate postpetiole, discally 
nearly entirely black abdomen, straight and slightly exserted black 
terebra; flavescent legs with their base stramineous and the hind coxae, 
except internally beneath, black; and the clear testaceous stigma. 
Both sexes were originally described from examples, now in my 
collection and probably comprising the type, captured by Dr. Edward 
Capron in the neighbourhood of Shere in Surrey. It has not since been 
noticed, though it is very probable that synonymity with P. nzgricollis, 
Thoms., will be established when the latter be again examined; but, as 
Bridgman truly says, his description is quite too short to render more 
than conjecture possible. 
ECLYTUS, Holmgren. 
Holmgr. Sv. Ak. Handl. 1855, p. 127. 
Head buccate and tumidous, with the vertex broad and emarginate; 
mandibular teeth subequal in length. Antennae very slender and nearly 
as long as the body. Metathorax convex and apically gradually declived, 
with inconspicuous areae and the petiolar area minute. Abdomen oblong- 
subclavate, with @ anus compressed and the elongate hypopygium sub- 
inflated; terebra and ¢ styles somewhat exserted. Legs very slender 
with the hind tibiae stout and basally strongly constricted. Wings 
subample with (in our species) no areolet. 
In the strongly buccate head and petiolate abdomen this genus can 
only be confused with Periessus, from which the very much more nitidu- 
lous and less pubescent body, equally long mandibular teeth, very slender 
femora, central petiolar spiracles and lack of areolet will distinguish it. 
Mesoleptus exornatus, Grav., was thought to belong here in spite of the 
presence of an areolet by Holmgren, incorporated by Thomson (O. E. ix. 
g16) and confirmed by Pfankuch. It was said to have been found near 
London by Stephens (Ill. M. vii. 215) but the single female in his 
collection is Mesoleptus cingulatus and, as no one else has noticed it, we 
cannot lay claim to it as indigenous. Ratzeburg tells us (Ichn. d. Forst. 
