210 BRITISH ICHNEUMONS. [Lissonota. 



on the mesonotum and marks of variable extent on the metapleurae, flavi- 

 dous ; metathorax closely and finely punctate with the areola obsolete. 

 Scutellum and usually the postscutellum flavous. Abdomen linear, parallel- 

 sided and sessile, a little longer and often decidedly narrower than the head 

 and thorax ; second and third segments subquadrate, closely and aluta- 

 ceously punctate ; basal segment obsoletcly canaliculate, not elevated, 

 somewhat longer than the hind coxae and hardly narrower than the 

 remainder, rarely white-margined ; the remaining segments apically and 

 sometimes basally white or stramineous ; pygidium with a short black style 

 on either side. Legs somewhat slender, fulvous ; anterior coxae and tro- 

 chanters pale flavous, the latter sometimes basally black; hind trochanters 

 and coxae flavidous with the latter often black-marked, their tarsi and 

 sometimes apices of their tibiae nigrescent. Wings a little narrow, hyaline 

 throughout ; stigma and radius piceous, radix and tegulae pale flavous ; 

 areolet subirregular and shortly petiolate, emitting the recurrent nervure 

 nearly from its centre ; nervellus intercepting below the centre. 



9 . Somewhat shining, alutaceously punctate, black. Head with the 

 mouth and clypeus fulvo-stramineous ; a somewhat large mark on the ver- 

 tical orbits and another on the cheeks pale flavidous. Antennae filiform 

 and not apically attenuate, curved and rather longer than half the body ; 

 flagellum ferrugineous beneath. Thorax cylindrical, laterally red ; two 

 mesonotal vittae and the supracoxal areae also often obscurely rufescent. 

 Scutellum red or red-marked. Abdomen as long as the head and thorax, 

 a little narrower than the latter, finely alutaceous, sublinear and a little 

 incrassate towards the anus ; basal segment longitudinally canaliculate in 

 the centre ; second sometimes apically castaneous and, like the third, 

 somewhat broader than long, alutaceous with its apex smooth ; terebra 

 nearly as long as the body, with spicula castaneous. Legs slender, fulvi- 

 dous-red ; posterior trochanters black above, and the hind tarsi infuscate. 

 Wings normal, hyaline ; stigma and radius piceous or stramineous ; radix 

 and tegulae whitish ; areolet irregularly subpetiolate. Length, ^ 9 

 5 — 8 mm. 



The 9 is said to resemble L. variabilis, from which it differs, besides 

 its colouration, slightly in its more nitidulous abdomen, more distinctly 

 canaliculate basal and shorter second and third segments. 



Both sexes are said by Holmgren to be very rare in Sweden, the 9 in 

 Gottland and the J only in sandy situations ; Gravenhorst only knew 

 females from Sickershausen and Parma, and says the male occurs on umbel- 

 liferous flow^ers in July ; Schmiedeknecht considers that this species cer- 

 tainly preys upon wood-boring hosts, since it usually occurs in the 

 vicinity of old houses or upon their window-panes. It was introduced as 

 British by Marshall in his 1870 Catalogus, but I have seen no specimens 

 of this distinct species, nor are there any indigenous records available. 



