268 BRITISH ICHNEUMONS. [Aroles. 



which one pair was taken by Smith in Darenth Wood and Colney Hatch 

 Wood ; one female by Heysham ; one pair by Stephens, as recorded by 

 him (I. M. SuppL) " Many years since 1 once observed this fine, and ap- 

 parently rare, insect, flying in plenty at Darenth Wood in June ; I fortu- 

 nately secured a pair. It is the only species of the genus " ; there are 

 also two males and one female from Desvignes' collection {cf. Entom. 

 1878, p. 157). Smith adds (Ent. Ann. 1859, p. 112) that Stephens took it 

 " on the trunk of an oak at the entrance to Darenth Wood ; on obtaining 

 the knowledge of the locality, we proceeded a few days afterwards to 

 Darenth ; no sooner had we arrived at the spot pointed out, than on the 

 identical oak a fine A?vles settled before us, and was immediately captured ; 

 the following season (about 1 840) a second example was taken at Colney 

 Hatch, since which we have not met with it until the present season 

 (1858), when a third was captured near Lowestoft." Dr. Giraud tells us 

 (Ann. Soc. Fr. 1877, p. 406) that Ferris has bred this species from Clyhis 

 arcuatiis in France. 



OEDEMATOPSIS. 



Oedcmopsis, Tschek. Verb. z.-b. Ges. 1868, p. 276; lib.cit, 1870, p. 430 ; Oedi- 

 mopsis. Thorns. O.E. ix. 907 ; {?) Hybophanes, Forst. Verb. pr. Rheinl. 1868, 

 p. 216. 



Head subglobose, eyes small, entire, shortly and sparsely pilose ; frons 

 convex, mandibles bidentate with the lower tooth the shorter ; clypeus 

 large and stout, apically broadly rounded or subtruncate, of ^ nearly flat, 

 as long as face and not broader than long, discreted with a basal fovea on 

 either side and apically subreflexed, of 9 semicircularly discreted basally, 

 very strongly convex and produced with a fine transverse carina, inter- 

 cepted by a conspicuous central subglobose tubercle, extending across its 

 centre. Antennae slender, filiform and a little shorter than the body. 

 Thorax stout and subovate with distinct notauli ; metathorax longer than 

 high, apically attenuate and produced above the hind coxae ; upper and 

 petiolar areae distinct ; spiracles circular and situated between the centre 

 and base. Scutellum deplanate and apically obtuse ; its basal fovea multi- 

 striate. Abdomen subpetiolate with the second and third segments 

 strongly punctate-rugulose ; of J sublinear with all the segments longer 

 than broad, the four basal of equal length, the two following longer than 

 the apical, and the last bicarinate discally and narrowed apically ; of 9 

 linear- sub fusiform with the three basal segments elongate and the re- 

 mainder telescoped, apical ventral segment covering base of terebra, which 

 is straight and not quite half the length of the abdomen. Legs slender 

 with the tarsal claws simple. Wings of normal breadth with no areolet. 



This genus differs materially from the Xoridini in its close-fitting man- 

 dibles, very large and not apically impressed clypeus, normally broad wings 

 and shorter terebra. 



