INTRODUCTORY PAPERS ON IOHNEUMONIDiE. 227 



arquaturu, Or., from Tseniocampa golhica : Bignell. 



anxiura, Wesm., from Teras hastiana; (De Graaf) Voll. Eupoecilia 



udana; Elisha. 

 septentrionale, Hohnrjr., from Poecilocampa populi ; Raynor. 

 geniculatum, Hohnrjr., from Cynips kollari galls (probably ex Ephippi- 



phora obscurana); Weston. Halias clorana ; 



Vollenhoven. 

 cylindricum, Br'ubjm., from Euchelia jacobteaB ; Fitch coll. 

 minutum, Bridgm., from Chrysocorys festaliella; Fletcher. 



Trichomma, Wesm. 



A. Scutellum yellow-marked, or black ; aculeus one-third of abdomen. 



1. enecator, 4 — 5 lines. 



B. Scutellum red ; aculeus one-fourth of abdomen. 



2. fulvidens, 7 — 7^ lines. 



T. fulvidens appears to be very rare ; there is one female in 

 the British Museum from Desvignes' collection. T. enecator is 

 not uncommon, and is apparently exclusively parasitic on 

 Tortricidae ; we have bred it from Tortrix pupae received from 

 Lord Walsingham, whose larvae had fed on Myrica gale. Vollen- 

 hoven records that Ileylaerts bred it from a Tortrix ; and in 

 Ruthe's collection there is a specimen bred from a willow-feeding 

 Tortrix. Brischke records it from Earias clorana; it emerges 

 direct from the Tortrix pupa without spinning any cocoon. 

 Details of both species are well figured in Yollenhoven's 'Pinaco- 

 graphia' (pi. 43, figs. 8, 9). 



Graven horstia, Boie. 



Black ; head and thorax yellow-marked : scutellum yellow ; apex of 

 abdominal segments yellow-banded ; legs yellow, varied with black and 

 red ; head cornuted ; exterior discoidal recurrent nervure interstitial ; 

 transverse anal nervure divided; aculeus slightly exserted (male and 

 female). picta, 8 — 11 lines. 



This oft described, but distinct and beautiful, species is not 

 mentioned in Marshall's catalogue. In the Proc. Ent. Soc. 

 Lond., 1872, p. xliv., we read: — "Mr. Bond exhibited a new 

 British species of Ichneumonida3 {Anomalon fasciatum), bred by 

 Mr. Mitford from the cocoons of the supposed variety of Lasio- 

 campa trifolii, obtained from larvae found at Romney, Hants " 

 (this should be Romney Marsh, Kent). The species was first 

 described by Drewsen and Boie as Gravenhorstia picta (Wiegm. 

 Archiv., ii., 43; 1836. Kroy. Nat. Tids., i., 311; 1837), from 

 specimens bred from Bombyx trifolii on May 20th. Dr. Giraud 



