Orthocentrus | BRITISH ICHNEUMONS. 55 

(7). 8. Areolet subpetiolate; @ pronotum 
pale. 
(10). 9g. Second flagellar joint of 9 aneeate 
frontal orbits pale ee 4. FRONTATOR, Zet?z. 
(g). 10. Second flagellar joint of 9 transverse ; 
36 whole frons pale 5. SANNIO, Holmg. 
(6). 11. Frons finely punctate below ocelli, 
not pale marked .. 6. MONILICORNIS, Zhoms 
(3). 12. Vertex broad; areolet often trans- 
verse ; face ‘often granulosely punc- 
tate. 
(16). 13. Face shorter and granulosely punc- 
tate; postannellus transverse-sub- 
triangular; ¢ unknown. 
(15). 14. Two basal segments finely aiapses 
third not transverse 
(14). 15. Two basal segments coriaceous, third 
subtransverse es 8. PETIOLARIS, Zhoms. 
(13). 16. Face longer, not granulosely punc- 
tate ; postannellus of 2 very short ; 
vertex broad. 
(20). 17. Stigma not infuscate, or radius not: 
basally straight. 
(19). 18. Radial nervure basally curved; stigma 
. ATTENUATUS, Holmg. 
“I 
infuscate. .. = 9 .. Q. FULVIPES, Grav. 
(18). 19. Radial nervure basally ade ; 
stigma pale 10. RADIALIS, Zhoms. 
(17). 20. Stigma infuscate, and radial nervure 
basally straight = ee .. II. PROTUBERANS, Holmg. 
1. stigmaticus, Holmgr. 
Orthocentrus stigmaticus, Holmgr. Sv. Ak. Handl. 1855, p. 325; Thoms. O. E. 
xxii. 2424, g ¢; Brisch. Schr. Nat. Ges. Danz. 1878, p. 108, ¢, 
Head transverse and not buccate, slightly emarginate posteriorly with 
the vertex narrow; frons deplanate and apically smooth; face normally 
protuberant, in g ‘entirely stramineous and in 2 piceous with its upper 
margin paler, mouth concolorous in both sexes. Antennae somewhat 
longer than half body, more slender in g which has the basal flagellar joint 
nearly twice longer than broad, in Q subquadrate; ¢ with scape stra- 
mineous and flagellum rufescent beneath. Thorax stout, slightly narrower 
than head, black with @ flavidous callosity before radix. Abdomen some- 
what longer than head and thorax, of ¢ deplanate with the three or four 
basal incisures testaceous, in 9 moderately compressed towards the anus ; 
basal segment nearly parallel- sided and almost thrice longer than broad, 
finely aciculate-scabriculous, slightly impressed laterally beyond the 
centre, with distinct and parallel carinae extending nearly to apex ; second 
finely aciculate-scabriculous, laterally impressed beyond the centre, sub- 
quadrate in 9 and longer than broad in ; third obsoletely aciculate 
basally, remainder smooth; ventral plica flavidous, terebra subexserted 
and subreflexed. Legs normal and red, with the hind coxae sometimes 
basally piceous; anterior legs of ¢ paler; hind tarsi infuscate. Wings 
slightly clouded ; tegulae pale ; stigma large, nearly as broad as the basal 
radius is long, infuscate or nigrescent and in ? basally paler; radial 
nervure apically straight; nervellus angled a little below its centre ; 
areolet broadly sessile and subtransverse, of normal size and irregularly 
pentagonal, or entirely wanting. Length, 34—5 mm. 
