156 icnxi;uMOMi),E. 



apex Avitli an oblique slope ; the sides rather acute at the top. 

 A large square spot on the seutelluiu and a long one on the post- 

 tieutellum yellow. Abdomen entirely black ; shining, impunctate ; 

 the petiole at the base depressed in the middle ; oblique ; its top 

 somewhat triangularly, its sides much more widely, depressed ; 

 gastroca;li oblique, smooth, raised in the centre; and from them 

 an obhque furrow leads to the apex of the [second] segment ; 

 the oblique furi-ows on the third segment moderately deep and 

 wide ; on the fourth they ai'e shallower. Legs almost bare ; the 

 fore trochanters beneath and at the apex all round, yellow. 

 Wings f ulvo-hyaliue ; the stigma testaceous iu the middle ; the 

 tegula; black." 



Lewjtli 1,'j millim. 



Ceylon. 



Ttipe in the Oxford Museum. 



The above description of Cameron's, though poor, is sufficient 

 to show that this female is closely allied to his Pimpla poesia, 

 which I consider nothing but an Oriental form of P. instigator, E. 

 Therefrom P. taprohanoi may be at once known by the obsoletely 

 l)unctate abdomen and pleurae, in which it resembles the genus 

 Thcronia ; the curiously and stoutly bituberculate basal segment 

 is distinct from tliat of any other species of this genus known 

 to me. 



102. Pimpla instigator, F. 



Ichnnimon instigator, Fabricius, Eiit. Syst, ii, 1793, p. 164 (5) ; 



Panzer, Scha-f. Ic. pi. cv, 1801, tig. 5 (J). 

 Cnjptus insti(/ator. Fabriciu,'?, Piez. 1804, p. 85. 

 Sirex spectrinn, ])onovan, Brit. Ins. vii, pi. •J'Jo, tig.s. 1 & 2 ( 5 ) : 



cf. Stephens, 111. ]Man. vii, p. 88o. 

 Piiiip/a instigator, Gravenliorst, Iclin. Eur. iii, p. I'lO ; Curtis, 



Brit. Eut. pi. ccxiv, tigs. 1-5 ; Zetterstedt, Ins. Lapp. p. 875 ; 



Ratzehnrg, Iclni. Eorst. i, p. 886 ; id., iii, p. 99, pi. iv, tig. 1 ; 



Curtis, Farm Ins. p. 99 ; Holmgren, Sv. Ak. Ilandl. 1854, p. 87; 



id., op. cit. i860, n. 10, p. 18 : Taschenberg, Zeits. Ges. Nat. 1863, 



pp. 52 & 261 ; Thomson, Op.' Ent. viii, p. 746 & xiii, ji. 1408 ; 



Schmiedeknecht, Zool. Jabrb. 1888, p. 470 ( d" $ )• 

 Var. P. intermedia, Hohugren, Sv. Ak. Ilaudl. 1860, n. 10, p. 19 



'\ ar. P. jirocessionea, Patzeburg, op. cit. iii, p. 101 (J) ; cf. Tos- 



quinet, Ann. See. Ent. Belg. 1897, p. 28.3. 

 Var. P.2)oesia, Cameron, 3Iancli. Mem. 1899, p. 176 ($). 



J ? . A black species, with only the femora and the tibiae red. 

 Head transverse, somewhat short and strongly narrowed behind 

 the eyes : frons concave and subexcavate, transversely aciculate, 

 with a longitudinal centi'al impressed line ; clypeus basally elevated, 

 strongly depress(>d towards the glabrous and subtruncate apex; 

 eyes oblong-ovate and slightly emarginate next the scrobes; face 

 strongly and eveidy punctate, with long black pilosity, centrally 

 convex, with a longitudinal and often subglabrous line ; man- 

 dibles stout and coarsely punctate, margined below ; palpi of S 



