214 Rev. T. A. Marshall's monofiraph of 



Vahiila ventvalis not surpassing the anus. Hind coxae smooth. 

 Spurs of hind tibia? shorter than \ the metatarsus. ^ J . Lengtli, 1\ ', 

 wings, 2 J lin. 



Smaller and less elongate than iinmiinis, Hal., and 

 further distinguished by the smoothness of the 2d 

 abdominal segment, and colour of the wings. The 2d 

 segment is longer than in ahjectus ; the 1st segment 

 shorter than in cahera, from which last it may also be 

 known by the colour of the legs. 



Common. Gregarious. The habitual parasite of 

 Euchelia jacohcea, L., from which it has been several 

 times reared, by Bignell, Sotheby, and myself. In July 

 and August the parasites issue from the body of their 

 victim, to the number of 6 — 9 in each brood, and make 

 white cocoons in an irregular mass, in which they 

 hj^bernate. JSIeHochorus facialis, Bridgman, is their 

 hyperparasite. 



Section IV. 

 59. Apantelesfraternns, Eeinh. 



Apantcles fraternus, Eeinh., Berl. ent. Zeit., 1881, 

 p. 47. ^ 2 . 



Black ; palpi pale ; femora fuscous, tibiae fusco-testaceous, paler 

 at the base. Wings hyaline, often sublacteous, stigma fuscous 

 or testaceous. Mesothorax and scutellum j)unctulate, scarcely 

 sliining ; metathorax and abdomen smooth, shining. Segment 1 

 twice longer than its medial breadth, with sides parallel as far as 

 the middle, afterwards lanceolate ; segment 2 with two impressed 

 lateral lines converging forwards into deep fovese and enclosing a 

 triangular space. Terebra very short. S" ? • Length, 1 ; wings, 

 2 lin. 



Similar to the following species, but much smaller, 

 and less elongate in form. 



Bred by Bignell in some numbers from Aspilates 

 ochrearia, Piossi. The minute white cocoons are arranged 

 in an alveariform mass, the shape of which is determined 

 b}^ the position of the victim at the time of its death. 

 In one case the geometrical larva is stretched almost 

 straight upon the twig, and the cocoons form three long 

 rows, with a few irregularly added in the middle, A 

 similar arrangement of cocoons is described under the 

 genus Microfiastcr (q. v.), but does not seem to occur in 

 any other species of Apantelcs. Brischke confirms this : 

 he says "cocoons as in Microgaster flarijjes." According 



