igS BRITISH ICHNEUMONS. 



Ervan, in Cornwall, early in October. Boar's Hill, Oxford (Hamm) ; 

 Isle of Arran (Waterston) ; on Herackti/n flowers, Southwold cliffs, in July. 



i6. indocilis, U'es/n. 



Ichiicuiiion salicatoriiis, Gr. I E. i. 245 ; Ste. 111. M. vii. 155, ? (part.) ; cf. Wesm. 

 Mem. couron. Ac. Belg. 1S59, p. 28. Amhlyteles indocilis, Wesm. Nouv. Mem. Ac. 

 Briix. 1S44, p. 126, i 9 ; Bui. Ac. Briix. 1848, p. 297, excl. i ; cf. lib. cit. 1854, p. 85 ; 

 Holmgr. Ichn. Suec. ii. 24S, excl. {, ; Voll. I'inac. pi. xxvii. f. 4 ; Thorns. Ann. Soc. 

 Fr. 1888, p. 117; Berth, lib. cit. 1S95, P- 652; Thorns. O. E. xix. 2097, <£ ? . /. 

 relitceus, Desv. Cat. 11, ?. 



? . Black, somewhat stout. Head with the cheeks and temples not 

 narrowed : clypeus sparsely punctate, apically truncate ; mandibles basally 

 closely punctate, bidentate ; frontal orbits white. Antennae setaceous, 

 apically attenuate, centrally white-banded, basal flagellar joints short, the 

 third quadrate. The pronotum and a callosity beneath the radix usually 

 white ; metathorax scabriculous, areola as long as broad, its apical costa 

 wanting ; costulae fine but entire ; coxal areae obsolete ; apophyses tuber- 

 culiform. Scutellum flat, finely and obsoletely punctate, shining, stra- 

 mineous. Abdomen black, the seventh segment dorsally, and the sixth 

 often with a minute apical dot, stramineous ; post-petiole finely aciculate 

 throughout, carinae distinct ; gastrocaeli distinct and narrower than the 

 flat, finely aciculate intervening space ; second segment coriaceous, re- 

 mainder nitidulous and sub-glabrous ; second ventral segment alone 

 plicate, the sixth glabrous with long, dense, pale pilosity, the ultimate 

 reaching to apex of dorsum and nearly concealing terebra, which is occa- 

 sionally slightly exserted. Legs normal; anterior femora apically red; 

 tibiae dull flavous or ferrugineous, the intermediate apically piceous and 

 the hind ones apically black ; tarsi rufescent, front ones paler. Wings 

 sub-hyaline ; tegulae and radix black ; stigma fulvous. 



$ . Black. Palpi fulvous ; mandibles, two dots on clypeus and the face, 

 except its centre longitudinally, stramineous ; mandibles bidentate ; clypeus 

 apically broadly rounded. Antennae with scape white-dotted beneath. 

 Lines before and beneath radix white ; metathorax mutic. Scutellum 

 somewhat flat, white. Abdomen black with apex of first segment fulvous, 

 second, third and base of fourth flavidous, remainder immaculate; thyridii 

 not oblique ; second and third ventral segments fulvo-flavous ; fourth 

 nearly entirely black, not plicate ; hypopygium strongly sinuate laterally, 

 genital valvulae black. Legs and wings as in $ ; hind femora stout ; 

 radix and tegulae strainineous. Length, 15-17 mm. 



I describe the sexes separately, because I only know the ? , which has 

 never before been adequately delineated, and because Wesmael had some 

 doubt as to the propriety of the conjunction of his first-ascribed S , since 

 accepted by authors, with his 9 , which appears in all but its immaculate 

 central segments to coincide accurately with the type of Gravenhorst's 

 /. saUcato7-ins. 



The $ strongly resembles that oi Ichneumon sarciiorius, but the second 

 flagellar joint is said by Thomson to be shorter, the hind femora more 

 sparsely punctate and stouter, the thyridii not oblique and, above all, the 

 fourth ventral segment is not plicate and nearly entirely black. Thomson 

 tells us (O. E. 192 1 ) that Holmgren did not think Wesmael had ascribed 

 the correct $ to A. indocilis, and that the former had many males of this 



