196 BRITISH ICHNEUMONS. [Lissomta. 



radix and tegulae whitish ; areolet either entirely wanting or irregularly 

 subtriangular, petiolatc or subpetiolate with the outer nervure obsolete or 

 wanting, of J sniall. Length, 6 — 7 mm. 



[I have little or no doubt that the typical specimen of L. semirufa 

 Desv., still extant in the British Museum and from which I have taken the 

 following short description, is synonymous with this species : — 



Head with the clypeus, mandibles and palpi stramineous ; face imma- 

 culate, closely and evenly punctate. Antennae slender and filiform ; api- 

 cally obtuse with the apical joints not distinctly discreted ; immaculate. 

 Thorax with a flavous hamate line on anterior margin of mesonotum and 

 callosity before the radix flavous ; spiracles small and circular. Scutellum 

 said by Desvignes to be immaculate, but it is entirely destroyed by a pin ; 

 in his variety it is said to have a white dot on either side. Abdomen 

 castaneous-red and sessile ; basal segment deeply canaliculate towards the 

 base, with a large discal black spot ; remainder more or less similarly 

 marked discally ; apical segments darker ; terebra nearly as long as the 

 body. Legs nearly entirely red. Wings with the stigma darker than the 

 pale tegulae, and radius infuscate ; areolet orbicular with the external ner- 

 vure pellucid and obsolete, though traceable. Length, 7 mm.] 



Bridgman gives {loc. cit.) a variety of the 9 with the second segment 

 entirely red and the terebra only as long as the abdomen ; he adds that 

 the head is transverse and narrowed behind the eyes, the basal segment 

 bears a canaliculation apically bounded by a discal fovea, the second and 

 third are rather longer than broad and the rest transverse ; the nervellus 

 intercepts at the basal third and the radial is externally slightly curved ; 

 the stigma is a little paler basally and the face parallel- sided. 



This species is more slender than L. Inila/or, of which, following Tasch- 

 enberg, it is considered a variety in Marshall's Catalogue, with the meso- 

 notal punctures larger and sparser and the face and thorax of 9 imma- 

 culate. It is not now considered, as was suggested by Thomson, synony- 

 mous with L. vicina, Holmgr., from which it differs in the structure and 

 colour of the antennae and its elongate second segment. 



It is not a common species in central and southern Europe. If the 

 above variety of Bridgman be indeed referable to this species and not 

 Z. F/etcheri, which the terebral length renders doubtful, we may consider 

 it confirmed as British on the strength of the single female he brings for- 

 ward ; later he records this species from Mousehold Heath, near Norwich, 

 though no one else has met with it in Britain and it has not yet been 

 bred. 



