114 



BRITISH ICHNEUMONS. 



\Limncrium 



(3). 4. Smaller; hind femora distinctly black 



at their apices .. ..2. GENICUI,ATUM, Grav. 



(2). 5. Lateral petiolar sulci deep ; hind 



tibiae centrally rufesccnt. 

 (7). 6. Hind femora distinctly black at their 



apices .. .. ■•3- annulatok, Zcff. 



(6). 7. Hmd femora entirely red throug-hout 4. rufifemir, 'J'li<n)is. 

 (i). 8. Basal area quadrate; hind tibiae not 



at all black-marked .. .. 5. XANTHOSTOMA, Grav. 



The remaining- six species are temporarily placed here for convenience. 



1. albidum, Ginel. 



Ichneumon alhidus, Gmel. S.N. i. 2705. Campoplcx albidus, Gr. I.E. iii. 474, 

 excl. varr. ; Ratz. Ichn. d. Forst. i. 94, cf. iii. 84 ; Holmgr. Sv. Ak. Handl. 1854, 

 p. 12; cT ? . Linineria albida, Holmgr. lib. cit. 1858, p. 53; Brisch. Schr. Nat. 

 Ges. Danz. 1880, p. 148; Thorns. O.E. xi. 1104, s ? . 



A black species with the femora and tibiae red, tlie hind tibiae pure 

 white with their apices broadly black and a nigrescent band bel\)re their 

 base. Length, 6-10 mm. 



The typical form of Thomson's rendering is large and not less than 

 nine mm. with the postpetiole and second segment not transverse, the 

 mesopleurae somewhat closely punctate, the metathorax not trans-rugose 

 but closely punctate with stout costulae and the inner area subcomplete, 



