BRITISH ICHNEUMONS. 165 



(10). 9. Gastrocaeli deep, broader than ru- 

 gose inter\-ening space ; fourth ven- 

 tral segment not plicate 3. Ctenichneumon, Thorns. 



(9). 10. Gastrocaeli small ; fourth ventral seg- 

 ment usually plicate. 



11. Mesosternal epicncniia entire; tere- 

 bra concealed 4. Spilichneumon, Thorns. 



12. Mesosternal epicnemia not entire ; 

 terebra not entirely concealed 5. Amblyteles, Wcsdi. 



13. Tarsi pilose, but with no setae be- 

 neath 6. Hepiopelmus, Wcsm. 



14. Clypeus apically rotund and centrally 

 mucronate 7. ACOLOBUS Wesiii. 



15. Pronotal furrow centrally tuberculate 

 or carinate 8. Anisobas, Wcsm. 



16. First segment dorsally intumescent 

 in centre 9. Probolus, Wcsm. 



(12), 

 (II), 

 (8) 

 (7) 

 (6) 

 (5) 



Gastrocaeli, &c., of Gastrocaeli, &c., Hypopygium of Basal segment of Setiferous tarsus of 

 Ctenichneumon. oi Amblyteles. Spilichneumon, ^ . Probolus. Amblyteles. 



LIMERODES, JVesmaeL 

 Wesm. Nouv. Mem. Ac. Brux. 1844, p. iii. 



Head normal, temples sub-buccate ; clypeus distinctly bisinuate at 

 the apex, especially in $ ; mandibular teeth unequal. Antennae slender, 

 filiform. Thorax somewhat slender and convex ; metanotum of normal 

 length, distinctly areated ; spiracles sub-linear. Abdomen elongate, narrow ; 

 of ? strongly compressed towards the truncate apex, with terebra sliglitly 

 exserted ; of S depressed, linear ; segments two to four longer than broad, 

 the second sub-impressed laterally towards its apex ; post-petiole smooth 

 and shining ; gastrocaeli sub-obsolete. Legs slender, tarsal claws simple. 

 Wings somewhat narrow. 



The affinity of this genus with Chasmias is well marked in the elongate 

 body and sinuate clypeus, as well as in the structure of the thorax and 

 antennae. 



I. arctiventris, Boie. ■ 



Ichneiivion arctiventris, Boie. KriJy. Tids. 1840, p. 319 ; Stelt. Zeit. 1S55, ?. Lime- 

 rodes arctiventris, Wesm. liul. Ac. Brux. 1848, p. 294 ; cf. HI), cit. 1854. p. 77 ; Ilolnigr. 

 Ichn. Suec. ii. 297 ; Berth. Ann. Soc. Fr. 1895, P- 578, 6 9. L. opluonivcnlris, Wesm. 

 Nouv. Mem. Ac. Brux. 1844, p. 112, ?. 



A shining, brightly coloured, linear species. Head sub-buccate and only 

 slightly narrowed posteriorly, black ; ^ with palpi and mandibles white, 

 face and clypeus flavous or with a central piceous mark. Antennae piceous, 

 more or less ferrugineous beneath ; of $ white-banded, of $ with scape 

 white beneath. Thorax black ; $ with pronotum and callosities before 

 and beneath radix usually white; areola glabrous, sub-semioval, incomi)lete 



