158 BRITISH ICHNEUMONS. 



orbits narrowly white ; of $ willi palpi, frontal orbits, mark on temples, 

 clypeus and face stramineous, the last centrally black-marked. Antennae 

 sub-hliform, moderately attenuate, white-banded in $, scape fiavous be- 

 neath in c?. Thorax of ? black, with pronotum rarely obscurely pale; 

 of $ with pronotum and lines before and beneath the radix white ; areola 

 rectangular, oblong-quadrate, broader in ■<$ , apically angulated. Scutellum 

 convex, black; apically glabrous, nitidulous and sometimes, in 1$ , white. 

 Abdomen black ; 9 with segment one at apex and two to four red ; S 

 two and three only margined with red ; anus immaculate ; post-petiole 

 strongly dilated, finely aciculate ; gastrocaeli transverse, of $ sulciform. 

 Legs red ; posterior coxae and apex of hind tibiae black ; hind tarsi 

 slender, infuscate. Wings a little clouded ; stigma and tegulae piceous ; 

 $ with radius not apically inflexed. Length, 10 mm. 



It is a rare species, ap])arently confmed to France, Belgium and Hol- 

 stein. I know of no indigenous records, though it was introduced as 

 British, by Marshall, in 1870. 



EXEPHANES, Wesmael. 

 Wesui. Nouv. Mem. Ac. Briix. 1844, p. 13. 



Head sub-triangular, not buccate, narrowed behind eyes ; clypeus de- 

 pressed, apically truncate and immarginate ; labrum exserted. Antennae 

 setaceous, apically attenuate. Thorax stout, punctate ; metanotal areae 

 often incomplete, spiracles linear. Scutellum not elevated. Abdomen 

 of $ sub-linear, of $ elongate-fusiform ; petiole not twice longer than 

 apically broad ; post-petiole bicarinate, its central area aciculate and twice 

 broader than the lateral ones ; gastrocaeli and thyridii small or sub- 

 obsolete ; ? with eighth segment and the terebra shortly exserted, the 

 valvulae of the latter broad ; apical ventral segment twice longer than the 

 penultimate, which is longer than the fifth. Legs normal and somewhat 

 slender. Wings with areolet pentagonal. 



The $ $ oi this genus are very distinct and allied to those of Chasinias, 

 but the $ ? so closely resemble those of the genus Ichneumon as to often 

 defy discrimination by any but the practised eye ; the eighth segment is 

 often exserted in the latter genus, and the most trustworthy points appear 

 to be the incrassated valvulae and broader central post-petiolar area ; the 

 inconspicuous gastrocaeli have also been indicated as a reliable distinctive 

 feature. 



Only the two species originally ascribed by Wesmael to this genus have 

 hitherto been recorded from Britain, although nine others (cf. Kriech. 

 Ent. Nachr. 1903, p. 325) are known on the Continent. 



Tabic of Species. 



(2). I. Hind femora entirely black ; 9 anus laterally 



compressed; (^ face white i. hilaris, 6'n?z'. 



(i). 2. Hind femora apically black ; $ anus not com- 

 pressed ; cJ face centrally black 2. occupator, Grav. 



I. hilaris, Grav. 



IcJincHtiioii hilaris, Gr. I. E. i. 329 ; Ste. III. M. 170, 9 • Excphancs hilaris, Wesm. 

 Nouv. Mem. Ac. Biux. 1844, p. 17; Thorns. O. E. xviii. 1S97 ; lierlh. Ann. Soc. Fr. 



