222 BRITISH ICHNEUMONS. [Lissonota. 



This is not a rare species in northern and central Europe ; Holmgren 

 detected the sexes in cop. in Sweden and Gra^■enhorst found it from June 

 to August on umbelliferous flowers, window-panes and Philadelphus coro- 

 narius. Several other kinds have been much mixed with it in Britain, 

 whence it has long been recorded, Tugwell has bred it from Trochilium 

 sphegiformc (Buckler) and a doubtful male was raised (Entom. 1883, p. 67) 

 from Scardia cloaaUa ; but in reality it is probably very uncommon here, 

 since I possess but a single female, which I beat from a young birch bush, 

 in the Assington Thicks, in Suffolk, on i6th May, 1902. In all probability 

 all the older records refer to L.errabunda, Holmgr., with which Dr. Cap- 

 ron and others have mixed it. It is also recorded from Hastings and 

 (Proc. S. Lond. Soc. 1896, p. 86) as bred from one of the Psychidae. 



30. distincta, Bridg. 



Lissonota distincta, Bridg. Trans. Ent. Soc. 1889, p. 437 ; Schrn. Zool. Jahr 

 1900, p. 381 ; Opusc. Ichn. 1318, ? . 



Black and somewhat dull. Head transverse, broader thorax and only 

 slightly narrowed behind the eyes ; palpi rufescent, clypeus apically and 

 mandibles centrally flavidous. Antennae shorter than the body. Thorax 

 immaculate and narrower than the head ; mesonotum finely punctate ; 

 mesopleurae nitidulous, anteriorly and interiorly punctate ; metathorax 

 finely and transversely rugulose, areola obsolete and incomplete, petiolar 

 area basally entire. Scutellum somewhat nitidulous, with fine and sparse 

 puncturation. Abdomen immaculate, black with the basal segments api- 

 cally nitidulous and subelevated ; basal segment about half as long again 

 as apically broad, finely reticulate and slightly impressed transversely 

 before its apex ; second and third segments almost transverse and finely 

 punctate, remainder smoother and more shining ; terebra as long as the 

 metathorax and abdomen. Legs red, with the posterior tarsi alone infus- 

 cate. Wings with the stigma pale piceous ; radix and tegulae strami- 

 neous ; areolet petiolate ; radial nervure externally straight ; nervellus 

 almost straight and intercepted at its lower fourth. Length, 5 — 6 mm. 



" It appears to be very distinct from any previously-described Lissonoto ; 

 the length of aculeus and black body easily separates it from the others " 

 (Bridg. /.c".). To me it appears, on the contrary, extremely closely allied 

 to Z. j^^wt'«/aA>;' both in sculpture, colour and the terebral length; the 

 head is, however, broader than the thorax, the segments have not their 

 incisures rufescent and the areolet of the wing is petiolate ; but the last is 

 a very variable feature in the present genus and if the two were compared, 

 better distinctions would doubtless be forthcoming. In a female, which 

 I have no doubt is referable to this species, the basal segment is distinctly 

 shorter and stouter with the apical angles more rounded and the spiracles 



