228 BRITISH ICHNEUMONS. [Fezotnachus. 



Black, with base of antennae entirely or only apex of second joint and 

 base of third pale. Abdomen with apex of the two basal segments, and 

 sometimes also base of the third testaceous. Legs black, with all the 

 trochanters and base of all the tibiae and tarsi, red ; posterior femora 

 more or less basally, and the front pair usually entirely, red. Wings 

 hyaline, with the radix infuscate and tegulae flavous. 



The peculiarly scattered and erect pilosity of the ? abdomen is quite 

 unlike that of any other black species of this genus. 



There is now, I think, no doubt that Hemimachus rufocinctus, Ratz., 

 which is entirely distinct from Heniiteles rufocinctits, Grav. (q. v. ante), is 

 the true $ of Pezomachus ifistabilis (cf. Bridg. Trans. Ent. Soc. 1883, 



P- 158). ... 



A small and common British variety of this species is mentioned by 



Bridgman : " The male has only a flattened depression indicating the 



areola, and the female has the legs almost entirely black-brown, and not 



the greater part red as is generally the case." This is the variety I have 



referred to under Hejniteles ritfocinctus, and really it is impossible to tell if 



he intended it to be placed in that genus or this. 



This is apparently a very common species, and has several times been 

 bred from various Microgaster cocoons and largely from spiders' nests. 

 Bridgman records '■'• Pezojnachus rufocinctus, Grav.," as common in Norfolk 

 and bred from Hyponomeuta padella and Laverna epilobiella. Parasitic on 

 Microgas/er crataegi and hyperparasitic, through a Microgaster, on Bombyx 

 pint (Ratz.). Captured at Plym bridge early in August, and both sexes 

 bred on loth July — apparently directly — from Zygaena filipendulae in 

 South Devon (Bignell) ; a male at Lastingham, in Yorks. (Marshall) ; 

 Maldon in Essex (Fitch) ; Harting and Hastings, in Sussex (Vict. Hist.) ; 

 both sexes hyperparasitic, through Apanteles zygaenan/m, on Zygaena 

 filipendulae (Buckler) ; both sexes bred from Coleophora caespititiella 

 (Entom. 1883, p. 65) ; Shere in Surrey (Capron) ; both sexes bred from 

 Coleophora genistae and females from Gracillaria phasiafiipennella (Entom. 

 1881, p. 139); Dorsetshire (P. -Cambridge) ; Bickleigh, in mid-September 

 (Bignell, Entom. 1882, p. 45) ; bred by Bignell at Plymouth, on 23rd 

 August, 1882, from a pupa of Ciofius scrophulariae (Entom. 1885, p. 152). 

 Taken by Evans in Lundin Wood, Dunfermline, early in October, 1897, 

 and by Beaumont at Pevensey and Blackheath, in August. 



Bankes bred several females in June, 1903, from the larvae of Coleophora 

 therinella, Tgst., collected in the Dartmouth district during the preceding 

 September, together with a single female Limtieria, upon which they may 

 have been hyperparasitic. Prideaux sent me a number of cocoons of 

 Apanteles zygaenariei?i bred from Zygaena filipendulae in July, 1899, and 

 from these cocoons emerged, the following month, eighteen females and 

 one male Pezomachus instabilis (cfi. Trans. Leicester. Phil. Soc. 1899, 

 p. 297). Chapman has sent me specimens from the Continent, bred from 

 Psychids, Fumea sp., Epichnopteryx pulla, Esp., var. Sieboldi, and hyper- 

 parasitically from a Campoplex cocoon. I possess examples from Black- 

 heath, Lewisham, Oxshott, Harting, Plumstead, Pevensey, Weybridge, 

 Shifnal ; Kilmore and Enniscorthy (Beaumont) ; Carlisle (Tomlin) ; 

 Dover (Elliott) ; Felden in Herts. (Piffard) ; Beer Ferrers (Keys) ; Shere 

 in Surrey (Capron) ; New Forest (W. Ellis) ; and Ilfracombe (E. Saunders) ; 

 Oakley in Fife (Evans). Unlike most Pezomachi, this species undoubtedly 

 spends the winter in the larval condition, and I have only taken it from 



