40 BRITISH ICHNEUMONS. [ Exochus 

No other known Exochid has pale-marked face and thorax combined with 
alar areolet, soif correctly placed in this group by its author, whose acumen 
in this respect is so well-known, it cannot fail to be abundantly distinct. 
Halliday records the type, w hich is doubtless among his other unlabelled 
rarities in the Dublin Museum, from Holywood; the species has not since 
been mentioned in literature, and only the general neglect of these smaller 
Ichneumonidae in Britain makes one hesitate to surmise that this species 
belongs to some such group as the Phaeogenides. 
12. niger, Bridg. 
Exochus niger, Bridg. Trans. Ent. Soc. 1883, p. 169, 2; cf. lib. cit. 1887, p. 375. 
Triclistus niger, Thoms. Deut. Ent. Zeit. 1887, p. 206, ?. 
A black species, with only the tarsi and tibiae red. © Head shining and 
subquadrate, constricted posteriorly, with sparse puncturation and white 
pubescence; frontal impressions transverse and very superficial; mouth 
ferrugineous. Antennae beneath and base of flagellum ferrugineous. 
Thorax with sparse white pubescence; mesonotum evenly punctate 
throughout; metathorax with three areae. Abdomen with sparse white 
pubescence; the whole disc glabrous and nitidulous and that of the second 
and third segments nude; second segment longer than broad, third sub- 
quadrate. Legs stout and black with the tibiae, tarsi and apices of all 
the femora ferrugineous. Wings with no areolet; radix and tegulae fer- 
rugineous, stigma and nervures black; nervellus intercepted below its 
centre. Length, 5mm. @Q only. 
Thomson says the areolet is only ‘interdum aperta,’ but Bridgman is 
twice distinct with “no areolet”; the former adds that it is very similar 
to £. aethiops, Grav., differing in the pale tibiae and tarsi, the internal 
hind calcaria longer than half the metatarsi and the external almost longer 
than the apical breadth of their tibiae. This species and 777clistus facialis, 
Thoms., which differs in its pale femora, are the only two which appear 
to me to represent the genus Amesoly/us, Forst. 
The type was captured at the beginning of August, 1882, in the neigh- 
bourhood of Norwich and isin the Castle Museum there; it has also been 
found in Sweden. In the middle of June, 1907, I took a ? at Matley Bog 
in the New Forest which must be regarded as a variety of this species, 
from which it differs only in having the hind tibiae black with a central 
white band, the antennae immaculate and anterior femora dull red; it is 
remarkable in the terebra reaching distinctly beyond the anus. 
13. squalidus, Holmgr. 
Exochus squalidus, Holmgr. Sv. Ak. Handl. 1855, p. 319, ; Brisch. Schr. 
Ges. Konig. 1871, p. 101, ¢ @ (wec Voll.). Triclistus squalidus, Holmgr. Ofv. 
1873, p. 60; Thoms. Deut. Ent. Zeit. 1887, p. 203, ?. 
A shining, black, punctate and shortly pubescent species. Head some- 
what constricted posteriorly; vertex deplanate and not emarginate; face 
protuberant, convex, punctate and elongately pubescent; frons punctate, 
canaliculate, anteriorly impressed on either side and centrally carinate ; 
palpi pale testaceous. Antennae a little longer than half body, filiform, 
nigrescent and below rufescent. ‘Thorax stout, a little broader than head 
with the mesonotum sparsely punctate and notauli wanting; propleurae 
