BRITISH ICHNEUMONS. 



its lateral foveae obsolete or inconspicuous ; genal costa continuous. 

 Antennae curved, inserted high on frons ; the scapes not further from 

 each other than from the eyes. Metanotal costulae entire ; dentiparal 

 areae externally arcuate. Anus with white fasciae. Tibiae nearly mutic, 

 the hind ones hardly longer than their femora. Wings with the nervulus 

 oblique, antefurcal, or not or hardly infle.xed. 



Only the following genera are known in Europe, though Ashmead, 

 who places this tribe between the Pla/yurini and the Fhaepgenides, has 

 included others from North America, &:c., which bear yet less seizable 

 characters. 



Table of Gcfiera. 



(2). I. Clypeus centrally mucronate ; scutellum 



pyramidal; coxal areae entire LiSTRODROMU.S, IVcsm. 



(i). 2. Clypeus centrally mutic ; scutellum simply 



convex ; coxal areae wanting Neotypus, Forst. 



LISTRODROMUS, Wesmael. 



Wesm. Nouv. M(5m. Ac. Brux., 1844, p. in. 



Head semi-circular anteriorly, narrowed behind the eyes ; clypeus 

 strongly rounded apically, with a small acuminate tooth in the centre ; 

 internal orbits not parallel, divergent. Antennae slender, somewhat short ; 

 of 9 filiform, of $ sub-moniliform towards the apex. Pronotum not 

 centrally tuberculate ; metathorax strongly areated ; coxal areae entire ; 

 sternauli distinct, crenulate ; spiracles sub-rotund, appendicular. Scutellum 

 pyramidal, laterally carinate throughout. Abdomen broad ovate, apically 

 obtuse, black with flavous markings ; post-petiole sub-explanate, pilose, with 

 the carine obsolete ; gastrocaeli normal ; incisures sub-aciculate. Legs 

 somewhat short and stout ; onyches of $ distinctly pectinate. Wings with 

 the second discoidal cell a little nearer the radix than the first cubital ; 

 nervulus often pellucid ; nervellus nearly vertical. 



I. nycthemerus, Grav. 



Ichnetimon nycthemerus, Gr. I. E. i. 399, $; Desv. Cat., 18, $. Listrodroinits 

 iiycthemeriis, Wesm. Nouv. Mem. Ac. Biiix. 1844, p. 146 ; Bui. Ac. Brux. 1854, p. 139, 

 Annexe pi. f. 13 ; Thom.s. Ann. Soc. Fr. 1888, p. 123 ; Berlh. lib. cit. 1S96, p. 303 ; 

 Thorns. O. K. xix. 2100, c? ? . 1. quiitqueguttatiis, Gr. I. E. i. 626, $. L. qitiiiqiie-' 

 gititatits, Bridg.- Fitch, Entom. 1881, p. 131, c? ? ; cf. Mori. Ent. Rec. 1900, p. 1S6. 



Head stout, black ; palpi pale ; internal broadly, and external orbits 

 flavous or testaceous ; $ with stramineous lateral clypeal dots. Antennae, 

 at least beneath, rufescent, apically piceous ; scape usually flavous beneath. 

 Thorax strongly convex and somewhat shining, black with lines before and 

 beneath the radix flavous ; areola sub-quadrate ; costulae entire. Scutellum 

 flavous. Abdomen subovate, centrally scabriculous, black ; the first two 

 or three segments broadly bimaculated, the remainder margined, with 

 flavous ; (^ has the third, fourth and, usually, seventh immaculate ; post- 

 petiole glabrous, basally sub-aciculate and often with a central fovea ; 

 gastrocaeli somewhat large, striate, deeply impressed, with the intervening 

 space sub-striate ; c^ valvulae testaceous. Legs black ; tibiae and tarsi 

 more or less red. AVings sub-hyaline ; stigma and tegulae black ; radix 

 piceous ; areolet broad, sub-quadrate. Length, 8 mm. 



