l8o BRITISH ICHNEUMONS. 



body ; black, fulvous with scape usually flavous beneath. Thorax black 

 with lines before and beneath radix, and usually the post-scutellum flavous ; 

 areola usually twice broader than long, basally narrowed, apically truncate, 

 laterally curved ; costae strong ; peliolar area tri-divided ; apophyses tuber- 

 culiform, spiracles linear. Scutellum slightly convex, entirely flavous. 

 Abdomen somewhat slender, black ; segments three to six with apical mar- 

 gins pale flavous, the second often with an apical longitudinal flavous line ; 

 seventh immaculate ; post-petiole centrally aciculate, carinae strong, some- 

 what elevated ; gastrocaeli large and deeply impressed ; thyridii distinctly 

 oblique ; intervening space aciculate, about as broad as centre of post- 

 petiole ; second segment elongate, remainder transverse ; second segment 

 only bearing a concolorous fold, the ultimate apically rounded and de- 

 pressed ; genital valvulae black. I-egs normal, black ; anterior coxae 

 sometimes pale, their femora internally ferrugineous, apically stramineous ; 

 tibiae and tarsi stramineous, hind tibiae at base and apex black. Wings 

 hyaline ; tegulae white ; stigma black or piceous ; areolet pentagonal, 

 narrowed above. Length, 13-14 mm. ? unknown. 



The clypeal line is sometimes replaced by two pale dots and the hind 

 tarsi are occasionally nigrescent. 



From C. plicatus, Mori., it may at once be known by its sub-dentate 

 flagellar joints and simply rounded hypopygium. 



There is little doubt, from the description of Berthoumieu, that A. albo- 

 viarginatus, which is only recorded from Hungary, is a synonym of the 

 present species; it appears to differ only in its pale-marked posterior 

 coxae, the basal, and sides of the two following segments. 



Var. rufescejis. I have found, in Dr. Capron's collection, a very distinct 

 form of this species, which I propose to distinguish by the above name. 

 From the entirely black and pale flavous type form it differs materially in 

 colour. The whole of the second segment and the third except centrally 

 at the base are brightly rufescent, all the femora are red above and the 

 posterior tibiae slightly tinged towards their apices with the same colour. 

 No locality is indicated, but it is certainly British and probably from 

 Shiere, in Surrey. 



Desvignes mentions no locality for his species, but it is recorded from 

 Glanvilles Wooton, Essex, the Hastings district, and Mr. W, F. Sladen has 

 taken it, at Ripple, near Dover, towards the end of July. 



SPILICHNEUMON, Thomson. 

 Thorns. O. E. xix. (1S94), 20S7. 



Mandibles bidentate. Pronotum hardly striolate laterally ; mesosternal 

 epicnemia entire. Scutellum white. Abdomen centrally red ; apical 

 segments black with white markings ; thyridii and gastrocaeli small ; ven- 

 tral segments two and three, rarely also four, plicate ; hypopygium large, 

 nearly concealing terebra, of c^ spinately produced or laterally obviously 

 sinuate. Hind femora black ; tibiae spinulose ; tarsi and their claws stout. 

 Wings with stigma and nervures usually pale ; areolet pentagonal. 



I'his genus is further rendered distinct by the elongate body resembling 

 at least in the S that of the Ichneumon extensorius group, finely striate 

 post-petiole of the $ , weak metathoracic costae, elongate or sub-quadrate 

 areola; the face of the male is entirely or partly flavous. The only species 



