204 BRITISH ICHNEUMONS. [ Lventerus 

(18). 17. Scape beneath and the whole face 
pale .. i ye “4 -s 9. PICTUS, Grav. 
(17). 18. Scape beneath and the whole face 
black. 
(20). 19. Frons’ closely punctate; ventral 
valvulae black... 8. BASALIS, SZeph. 
(19). 20. Frons not closely punctate ; ventral 
valvulae pale a Hs in 
(16). 21. Face only marked with white; hind 
femora mainly red Ks .. 10. AURIFLUUS, fad. 
(11). 22. Hind femora rufescent or pale. 
(26). 23. Scutellum distinctly foveolate at its 
apex. 
(25). 24. Areolet sessile ; scutellum and face 
black oF ee a 21 ti STIs, wlolperes 
(24). 25. Areolet petiolate ; scutellum and face 
flavous-marked .. iA, .. 12, EXSTIRPATORIUS, Ader. 
(23). 26. Scutellum simple, not apically 
foveolate. 
(28). 27. Face black; anus rufescent; scu- 
tellum often pale ve mi 
(27). 28. Face pale; anus and_ scutellum 
9g. FLAVILABRIS, /folmgr. 
13. LIMBATELLUS, Holmgr. 
black e oH aA .. 14. MITIGOSUS, Grav. 
(10). 29. Centre of abdomen red, discally 
black-marked at .. 15. LINEOLA, Szeph. 
(1). 30. Areolet of the wing entirely wanting 16. BIMACULATUS, Hlo/mgr. 
1: -Curtisi,. Hal: 
Cteniscus Curtisii, Hal. Ann. Nat. Hist. 1839, p.113,¢; cf. Westw. Introd. 
il. 57. 
Face and scutellum white-marked. Abdomen with apical margin of all 
the segments whitish. Legs red; hind tibiae and tarsi black and some- 
what stout; tarsal claws pectinate. Length, 9 mm. 
“ Distinguished from 77yphon gnathoxanthus and allied species by its 
more robust figure, and the thickness of the hind tibiae and tarsi, in 
which respect it resembles a Scolobates. 
“Ireland, on a willow; June” (Haliday). This appears to be a solitary 
2 (cf. Curt. B. E. fol. 399); but, in his MS. preserved in the Dublin 
Museum, the author says he has himself taken the present species com- 
monly in Ireland. It is given as type of the genus C/eniscus by Westwood, 
though C. aurifluus is stated to be so by Curtis. Stenton rediscovered 
the species at Wimbledon where he took half-a-dozen examples, includ- 
ing both sexes during July, August and early October, 1910. 
2. elegans, Steph. 
Tryphon elegans, Ste. Ill. M. vii. 239, ¢. 
A shining, black and flavous species, with the abdomen not red and 
face entirely black. Head very smooth and evenly punctate throughout, 
with the mouth flavous and the palpi stramineous; mandibular teeth of 
equal length. Antennae black, with scape piceous and flagellum rufes- 
cent beneath. Thorax very shining, black with a flavous callosity before 
