go BRITISH ICHNEUMONS. {Phygadeuon. 



pro- and meso-pleurae darker ; niesonotum sub glabrous, with obsolete 

 iiotauli ; nietathorax smooth and shining with the petiolar area rugose, its 

 basal costa centrally wanting ; apophyses prominenl. Abdomen finely 

 and diffusely punctate and pubescent ; basal segment fulvous, shorter 

 than terebra, spiracles obsolete, centrally canaliculate, apically explanate 

 and broad ; second red, with a piceous fascia ; third similarly marked ; 

 remainder piceous, apically rufescent ; seventh whitish. Legs fulvous, 

 with the hind femora and tibiae darker. Wings punctiform. Length, 4 mm. 



The variety itiaequalis appears to differ only in the coloration of the 

 second segment. 



This species certainly belongs to Phygadeuon, rather than Heniiteles, as 

 is exemplified by its stout antennae and thick build. Its relationship with 

 the present male is, however, purely tentative. It is quite distinct from 

 Phygadeuon ( Stibeutes) Gravenhorsti. 



This female has for long stood in our list, but it appears to be rare with 

 us, since I have failed to discover any records ; but in the middle of 

 October, 1897, I captured one specimen of the type form (not noted in 

 Britain before), in a hole upon Foxhall Plateau, near Ipswich. Elsewhere 

 it has only been found in Germany, where Ratzeburg bred it from the 

 Ophionid ichneumon, Henicospilus merdarius, Grav. 



20. dumetorum, Grav. 



Phygadeuon dumetorum, Gr. I. E. ii. 669 ; Tasch. Zeits. Ges. Nat. 1865, p. 24 ; 

 Thorns. O. E. x. 957, 6 ? . 



Head coarsely punctate, face prominent ; clypeus not discreted, of S 

 apically bidentate ; mouth of ? red and vertex of ^ sub dilated behind 

 the eyes. Antennae filiform, black ; of $ slender, not longer than the 

 body, scape a little shorter than the third flagellar joint and often entirely 

 or beneath ferrugineous, twelfth to fourteenth joints with elevated lines ; of 

 $ stouter, half length of the body, basally fulvous or ferrugineous, with 

 the sixth and seventh sometimes stramineous, and the first flagellar joint 

 evidently shorter than the second, though hardly shorter than the scape. 

 Thorax coarsely punctate ; metathorax rugose, with complete areae ; areola 

 emitting costulae behind the centre, of ? semilunate, of 6 distinctly 

 hexagonal ; petiolar area reaching beyond the centre, not discreted and 

 laterally indeterminate ; apophyses obtuse, spiracles small and circular. 

 Scutellum black. Abdomen not broader than the thorax, nitidulous ; 

 black, with the second and third segments red, and in S also the fourth ; 

 seventh white in $ ; post-petiole slightly elongate, carinate, canaliculate, 

 rugosely punctate or rimose, with prominent spiracles ; terebra not longer 

 than the post-petiole. Legs fulvous or red ; hind pair with the tarsi, the 

 apices of femora and of tibiae, and sometimes the coxae basally, infuscate. 

 Wings hardly clouded ; costa with a sometimes obsolete white dot, radix 

 flavous ; tegulae ferrugineous, of $ black. Length, 4-5 mm. 



The coarsely punctate head and thorax, sub-lunate areola, and laterally 

 indeterminate petiolar area will distinguish this species, which shares the 

 obovate abdomen, short terebra, rimose post-petiole, entire petiolar area 

 and the number of antennal joints with P. variabilis. 



