24 BRITISH -ICHNEUMONS. [ Polyclistus 

POLYCLISTUS, Forster. 
Forst. Verh. pr. Rheinl. 1868, p. 161. 
Head laterally semiglobose, with the vertex narrowed into a mere ridge 
and the subexcavate occiput perpendicularly declived immediately behind 
the eyes and ocelli; frons densely and very finely punctate, with the 
short and superficial scrobes distinct; eyes not internally emarginate ; 
cheeks elongate with no sulci; face very strongly protuberant, densely 
and very finely punctate. Antennae somewhat short, stout and apically 
attenuate, ¢ flagellar joints elongate. Thorax with pronotum glabrous; 
metathorax with areola nearly always confluent with basal area, the cos- 
tulae strong and all transverse lateral carinae wanting; petiolar area not 
discreted, supracoxal obsolete; spiracles not small. Scutellum deplanate 
and not margined, its basal foveasimple and linear. Abdomen stout and 
not narrow, subfusiform ; first segment very strongly constricted basally 
with the carinae stout; the second to beyond centre of the fifth laterally 
margined; the transverse second and the following evenly and densely 
punctate. Legs short and very stout; intermediate calcaria of equal 
length; all femora clear red. Areolet wanting, stigma somewhat broad ; 
lower basal nervure postfurcal, discoidal cell apically a little acute below ; 
nervellus antefurcal and geniculate at its lower fourth. 
This is the genus very generally known with us as Jefacoelus (now 
restricted to a single American species), since Holmgren in 1873 mistook 
Polyclistus for it; this was corrected in 1887 by Thomson, who excludes 
M. ventralis, Holmgr., and recognises only the three following species. 
Its peculiarly prominent face, very abruptly declived occiput and_ basally 
constricted first segment render this genus distinct. 
Table of Species. 
(2). 3. Radial nervure apically deflexed ; 
length 7 mm. e .. 1, FEMORALIS, Jourc. 
(x). 12. Radius apically reflexed ; length at 
most 6 mm. 
(4). 3. Basal segment transverse ; apophyses 
rectangular : i .. 2. MANSUETOR, Grav. 
(3). 4. Basal segment elongate ; apophyses 
wanting - sh of -y 3.) FEAVICHRS, eze: 
1. femoralis, Fourc. 
Ichneumon femoralis, Fourc. E. P. ii. 896; Grav. Mem. Ac. Tor. 1820, p. 383, 
@. Exochus femoralis, Gr. I. E. ii. 346; Steph. Illus. M. vii. 266; Fonsc. Ann. 
Soc. Fr. 1849, p. 236; Holmgr. Sv. Ak. Handl. 1855, p. 308; Voll. Pinac. pl. viii. 
fig. 3. Metacoelus femoralis, Holmgr. Ofv. 1873, p. 61, ¢ ?. Polyclistus 
femoralis, Thoms. Deut. Ent. Zeit. 1887, p. 218, ¢ ?. 
A black and shining species with the mouth testaceous, and the face 
ferrugineous above; frons distinctly impressed above the scrobes.  An- 
tennae ferrugineous beneath; basal flagellar joint longer than broad. 
Legs red with the hind coxae rarely infuscate and the calcaria longer than 
in the following species. Wings hyaline or but slightly clouded with the 
