60 BRITISH ICHNEUMONS. [ Orthocenirus 

anus. Legs fulvous. Wings with the areolet twice broader than high; 
nervellus geniculate, and intercepted at its lower third. Length, 5 mm. 
Thomson says that this species is similar to O. fulvipes in the structure 
of the antennae, legs and alar neuration, but that it differs in the granu- 
ately punctate face, shorter cheeks, in having the basal segment thrice 
longer than apically broad and not sulcate, in the alutaceously strigose 
second and basally hardly alutaceous third. Moreover, this and the next 
species differ from the remainder of the genus in Britain in their distinctly 
granulate face which is confined above by an entire stramineous line, the 
strongly transverse areolet and elongate abdominal segments. 
Very rare in southern Lapland in August (Holmgren and Roman); 
Germany (Thomson); and France (Gaulle). It is probably not uncommon 
with us, though not hitherto recorded from Britain, since I have several 
times taken it on the windows of Monks’ Soham House, Suffolk, and the 
Rey. T. A. Marshall has given it me, probably captured at Botusfleming in 
Cornwall. 
8. petiolaris, Thoms. 
Orthocentrus petiolaris, Thoms. O. E. xxii 2428, ?. 
Black; ¢ with face, cheeks, prosternum, a triangular mark before 
radices and the antennae basally beneath, flavescent. Abdomen with the 
basal segment not sulcate and, with the second, coriaceous; second and 
third with their apical margins substramineous. Legs fulvous, of g paler 
with its hind coxae internally nigrescent above. Length,5 mm. ¢ Q. 
This Swedish 2 was described as distinct from the last species, with 
which it coincides in the capital colouration, facial puncturation and the 
structure of the legs and of the alar nervures, solely on the strength of its 
coriaceous two basal segments, apically subdilated sixth, the almost trans- 
verse third and less compressed anus. I consider its stability doubtful ; 
but here place a g, which agrees better in its abdominal conformation 
than with that of the last species. 
No one has recognised the ¢ since first described, and I have seen 
but a single ¢, captured by Mr. Stanley Edwards at Lynton, in Devon, 
in 1890 and now in my collection. 
9. fulvipes, Grav. 
Orthocentrus anomalus, Gr. 1. E. iii, 360, ¢ (part.); Holmgr. Sv. Ak. Handl. 
1855, p. 351, excl. ¢; cf. Westw. Mod. Class. ii, Synop. 59. O. fulvipes, Gr. I.E. 
ili, 363, 9 (¢ sic); Holmgr. Sv. Ak. Handl. 1855, p. 334; Thoms. O. E. xxii, 
2429, 3 3: 
Head somewhat transverse, normally buccate; vertex not very broad, 
but deeply emarginate; frons deplanate, apically smooth and basally 
finely punctate; face normally protuberant, punctate and pubescent, of 3 
entirely stramineous and in ? piceous with its apex and the basal margin 
ferrugineous; g also with frontal orbits shortly, cheeks broadly and the 
mouth, stramineous; 9 mouth rufescent and genal sulcus distinct. An- 
tennae of ¢ filiform and somewhat longer than half the body, with scape 
flavidous and flagellum testaceous beneath, its basal flagellar joint twice 
longer than broad; of 9 shorter and stouter with flagellum rufescent 
beneath and its basal joint transverse. Thorax narrower than head, sub- 
cylindrical; g¢ prosternum, prothoracic margin and anteradical callosities 
