14 THE ENTOMOLOGIST. 



The species of Paniscus are amongst the commonest of our 

 Ichneumons, but they are rather difficult to distinguish; they 

 bear considerable resemblance to the species of Ophion in many 

 respects, but the neuration will at once distinguish them. P. 

 tarsatus, Brischke (Trans. Ent. Soc. Lond., 1881, p. 157), and 

 P. fuscicornis, Holmgr. (Entom. xvii. 67), are added to the 

 species included in Marshall's catalogue. Neither species are un- 

 common in Britain, the former appears to be especially attached to 

 the species of Eupithecia ; its elongate, cylindrical, smooth, hard, 

 black cocoon, with a narrow median pale band, is figured on 

 plate ii., fig. 7. P. inquinatus, Gr., is omitted, as no author has 

 referred to this species since Gravenhorst described the two 

 females captured near Netley, by Hope ; and he opines that their 

 colour was not natural. It may either be a good species, or 

 probably the same as Holmgren's P. cephalotes. Katzeburg has 

 figured the wing of P. testaceus at Die Ichn., vol. ii., pi. i., fig. 

 25, and see Vollenhoven's ' Schetsen,' pt. i., pi. ii., fig. 20. Boie 

 mentions parthenogenesis in P. testaceus, in Wiegmann's Archiv., 

 ii. 38. The life-history of Paniscus has already been fully referred 

 to (Entom., xvii. 124; and see Ent. Nach., v. 221, 265); so we 

 will here merely give the list of hosts : — 



1. cephalotes, Holmgr., from Orgyia pudibunda, Poecilocarapa populi ; 



Brischke. Dicranura vinula ; generally. D. 

 bifida; Baker. Acronycta tridens, A. psi, 

 A. megacephala, CucuUia scrophulariae, C. 

 thapsiphaga's C. asteris, C. balsamit3e=i=, C. 

 artemisi£B=;=, C. argentea=:= ; Brischke. 



2. virgatus, Fourc, from Odoutopera bideutata ; Bignell. Eupithecia 



absynthiata, E. sp. ? Brischke. E. succentu- 

 riata; Biguell. Drepana unguicula ; Brischke. 

 Dicranura bifida; (Richter) Grav. Cosmia 

 trapezina ; Bignell. Hadeua pisi ; Newport. 

 Catocala promissa ; Giraud, Brischke, Bignell. 

 Hahas prasinana ; Brischke, Biguell. 



3. testaceus, Or., from Sraeriuthus populi ; Marshall. Bombyx pini* ; 



(Reissig) Ratzeburg. Phigalia pilosaria, Nys- 

 sia pomouaria* ; Scharfenberg. Eupithecia 

 castigata ; Bignell. Dicranura vinula ; gene- 

 rally, but often undistinguished from P. cepha- 

 lotes, see Albin's plate xi. D. bifida ; Brischke. 

 D. furcula ; Ratz. Hybocarapa Milhauseri* ; 

 Taschenberg. Clostera anachoreta ; VoUen- 

 hoven. Acronycta leporina ; Brischke. A. 

 psi ; Raynor, Warren. A. megacephala ; 

 (Perris) Gir. Nonagria geminipuucta; Flet- 



