igO BRITISH ICHNEUMONS. 



Head black, cheeks somewhat buccate ; palpi, the bidentate mandibles, 

 and in $ the frontal orbits rufescent ; S with clypeus and face, except 

 sometimes centrally, and often the external orbits, flavous. Antennae 

 setaceous, somewhat stout, apically attenuate ; of ? piceous with basal half 

 ferrugineous, flavous centrally above, and the sixth flagellar joint quadrate ; 

 of (? black with the scape flavous beneath. Thorax black with lines at 

 radix and, in ,$ , the pronotum, flavous or rufescent ; areola quadrate or 

 sub-transverse, costulae obsolete or distinct ; apophyses generally very 

 small. Scutellum, and in ^ sometimes the post-scutellum, flavous. Ab- 

 domen elliptic-oval, black with the first three or four segments flavous and 

 often basally piceous and apically rufescent ; the ^ genital valvulae and 

 often its seventh segment dorsally rosy ; post-petiole sub rugose ; gastro- 

 caeli small and deeply impressed ; ^ with fourth ventral segment plicate, the 

 ultimate long, laterally sinuate and centrally rounded at the apex. Legs 

 normal, black ; front femora within, and the posterior apically, ferrugineous 

 or flavous ; tibiae and tarsi fulvo-flavous, paler in ^ ; hind femora of $ 

 externally sparsely punctate. Wings flavescent, stigma and tegulae flavous 

 in ^ ; areolet somewhat narrowed above. Length, 12-16 mm. 



The apophyses of this species vary somewhat in length, often being so 

 short as to be obsolete. It should be noted that the post-petiole is entirely 

 pale and sub-rugose. 



The ? variety rufaiorius has the antennae tricoloured, the four apical 

 segments, all the orbits and often the whole face, red ; iricoloreus is 

 another $ var. with the meso- and meta-notum red ; Lichtetistelni is a (? 

 w^ith three marks on the mesonotum, the four basal segments at their 

 apices, and the posterior femora, flavous ; the var. xanthius has red mark- 

 ings on the metanotum only. 



On the Continent this species is very widely distributed and extends to 

 Lapland ; Holmgren says vaguely that it occurs in woods, meadows and 

 pastures ; Rondani has bred it from Macaria litiirata and the female 

 hibernates among moss. It would, however, appear to be rare in Britain ; 

 Bignell has taken it, at Bickleigh, in Devon, at the beginning of August 

 and in the middle of June ; Stephens believed the var. xanthius had been 

 taken near London ; it is recorded by Bairstow, from Bradley Wood, near 

 Huddersfield, in 1879; and from Essex. 



6. equitatorius, Panz. 



Ichnetunon equitatorius, Panz. Schaef. Ic. 56, pi. ii. f. 19 ; Gr. Mem. Ac. Sc. Torin, 

 1820, p. 321 ; I. E. i. 405 ; Ste. 111. M. vii. 180, i. Ainblyteles equitatorius, Wesm. 

 Bui. Ac. Brux. 1848, p. 300 ; Holmgr. Ichn Suec. ii. 243 ; Thorns. Ann. Soc. Fr. 

 1S88, p. 113 ; Berth, lib. cit. 1S95, p. 603 ; Thorns. O. E. xix. 2095, <i ? . /. antenna- 

 torius, Gr. I. E. i. 511, 9. A. antennatorius, Wesm. Nouv. Mem. Ac. Brux. 1844, 

 p. 130, 9 ; Bui. Ac. Brux. 1854, p. 92, J 9 . Var. /. Jlaviceps, Tisch. Stett. Zeit. 1879 ; 

 Kriech. Ent. Nachr. 1894, 6. 



Head black ; mandibles strongly obtuse apically, with the lower tooth 

 small and indistinct, sometimes obsolete in the S > frontal orbits usually 

 red ; S with clypeus, face and part of the mandibles flavous. Antennae 

 setaceous, somewhat stout, apically attenuate, black ; of 9 white-banded 

 and usually red towards the base, fourth flagellar joint sub-quadrate ; of $ 

 piceous, with the scape flavous, beneath. Thorax black ; pronotum and 

 callosities at radix of $ flavous, of ? sometimes ferrugineous ; areola sub- 



