82 THE ENTOMOLOGIST. 



P. impiger, Wesm., P. suspicax, Wesm., P. nanus, Wesm., and 

 P. trepidus, Wesm., have been added to the British list since the 

 publication of Mr. Marshall's catalogue, and P. similis and 

 P. formosus have been described as new (Trans. Ent. Soc. 

 Lond., 1881, pp. 147-149). Several of these smaller and closely- 

 allied Ichneumons are quite common in Britain, but. the)'^ are 

 generally overlooked, and but little understood in this country; 

 hence we have but little reliable information as to their occurrence 

 and habits. From the following list of hosts, however, it will be 

 noticed that they appear to be more particularly parasitic on the 

 larvsB of the Micro-Lepidoptera. Several species of the genus 

 have been bred from various Psychida. Brischke is said to have 

 bred a species from Saperda populnea, which Ratzeburg doubtfully 

 determined as Wesmael's P. suspicax ('Die Ichneumonen,' iii. 167). 

 The host was probably a Tortrix, and the species of parasite is 

 somewhat doubtful (c/. infra, host of P. imbellis). Vollenhoven 

 has well figured a species belonging to the semivulpinus and 

 melanogonus group, with the coxal process toothed, in his 

 'Schetsen' (pt. 1, pi. iii., fig. 16). P. similis and P. formosus are 

 figured in the Entomological Society's 'Transactions' for 1881 

 (pi. viii., figs. 4 & 5). 



The following British species have been bred : — 



1. semivulpinus, Or., from Tortrix rosana ; Kawall, Brischke (laevigana). 



Euchromia rufana (rosetana, Hb.) ; Ron- 



dani. 

 3. melanogonus, (jweZ. ,, Qj]nectra pilleriana ; Taschenberg. Depres- 



saria nervosa ; Vollenhoven, Fitch Coll. 

 5. stimulator, Gr. ,, Tortrix viridana ; Ratzeburg. Yponomeuta 



padella ; Butler. 

 14. troglodytes, (rr. ,, Cerostoma?; Voll. 



17. imbellis, Wesm. „ Tortrix pupa in tumid twig of Populus tremula; 



Brischke. ['? Semasia corollana, Huh. (Hee- 

 gerana, Wilk.)'\ 



18. collaris, (rr. „ Tortrix pupa on oak ; Brischke. 



19. candidatus, 6^r. "e pupa phaljenae " ; Gravenhorst. Tortrix 



viridana ; Bignell. 



OioRHiNus, Wesm. 



Abdomen, female, segments 2nd to 4th entirely, 5th to 7th, apex red; 

 male, 2nd to 7th red-margined. Legs red, hind femora to the 

 middle ; base and apex of hind tibiae fuscous ; greater part of hind 

 legs of male black. (Male and female.) - pallipalpis, 2J lines. 



See Trans. Ent. Soc. Lond., 1881, p. 149. 



