BRITISH ICHNEUMONS. 53 



(25). 26. Coxae of $ with scopulae ; (^ abdomen 



flavous or black. 

 Tibial white band small and indistinct 13. CORUSCATOR, L/;//i. 

 Tibial white band large and conspicuous 14. Gravenhorsti, Fotisc. 

 Terebra at least one-third as long as 



the abdomen. 

 Frontal orbits of 9 immaculate ; fla- 



gellum o{ $ white-banded 15. albilarvatus, Gr. 



Frontal orbits of $ red ; flagellum of $ 



immaculate, its coxae white 16. LANIUS, Grav. 



Size 7 mm. or less ; hind coxae of $ 



with oblique cristulae. 

 Anterior legs white ; coxae multicris- 



tulate 17. VARIPES, Grav. 



Anterior legs red ; coxae tricristulate 18. MAGUS, IVesm. 



I. luteiventris, Grav. 



Ichneumon luteiventris, Gr. Mem. Ac. Sc. Torin, 1820, p. 330, i ; Wesm, Nouv. 

 M^m. Ac. Brux. 1S44, p. 73 ; Thorns. Ann. Soc. Fr. 1887, p. 13 ; Berth, lib cit. 1895, 

 p. 265, 6 9 . Tragus luteiventris, Gr. I. E. ii. 386 ; Sle. 111. M. vii. 272, i . Cratich- 

 7teunion luteiventris. Thorns. O. E. xviii. 1946, (J 9 . /• indictus, Tisch. Stett. Zeit. 

 1874, i. 



$. Head black; face, mouth and all the orbits pale; mandibles 

 apically fuscous. Antennae nearly the length of the body ; black, fulvous 

 beneath ; first two joints black above and flavous beneath. Thorax 

 gibbous, pronotum, usual lines near radix, flavous and somewhat elongate, 

 sometimes with two reddish marks on the disc of the metanotum ; areola 

 transverse. Scutellum and post-scutellum flavous. Abdomen generally 

 narrower than thorax, somewhat parallel-sided, testaceous, with first and 

 base of second segments black ; apical segments also black ; post-petiole 

 smooth ; gastrocaeli very shallow. Legs pale red ; anterior coxae and 

 trochanters flavous or stramineous ; posterior coxae pale stramineous 

 beneath, black with a ferrugineous mark above ; the femora vary from 

 mostly fulvous to mostly black. Stigma and tegulae testaceo-flavous. 



$ . Body stout, nigropiceous and cinereo-pubescent throughout. Head 

 black ; cheeks and temples slightly inflated ; mandibles rufescent ; clypeus 

 with a lateral dot and central mark red, rarely entirely black ; frontal, 

 vertical and occipital orbits pale. Antennae stout, somewhat attenuate 

 apically, with a white central band and red scape. Thorax with margin of 

 pronotum, a callosity beneath the radix and a line below the scutellum, 

 pale ; areola sub-quadrate. Scutellum pale flavous, not convex. Abdomen 

 with the post-petiole smooth bearing a few isolated punctures ; gastrocaeli 

 obsolete ; segments one to three or one to four sometimes reddish towards 

 the apex ; the sixth sometimes pale-margined ; seventh apically testaceous. 

 Legs somewhat robust, anterior pairs flavescent, the femora generally 

 apically, and tibiae partly, red ; scopulae large and conspicuous. Wings 

 a little clouded ; stigma pale fulvous ; tegulae red- brown. Length, 

 12-17 mm. 



The castaneous abdomen and flavous scutellum of the ? , and the 

 testaceous (except base) abdomen and for the most i)art rufo-testaceous 

 legs of the <?, will at once distinguish this species. 



It is widely distributed throughout central Europe. Gravenhorst took 



