192 BRITISH ICHNEUMONS. [Lissonoia. 



face subtransverse, evenly and distinctly punctate throughout, immaculate, 

 with the epistoma longitudinally prominent ; mandibles and apex of the 

 glabrous and nitidulous clypeus flavescent ; palpi testaceous. Antennae 

 filiform and immaculate throughout, not unusually slender and distinctly 

 shorter than the body ; apical joints normal. Thorax black and rarely 

 immaculate (form typ.) ; but usually with the pronotum, callosity below 

 the radix and a subcircular spot on either side of the evenly and distinctly 

 punctate mesonotum, flavous ; mesopleurae evenly punctate throughout 

 and nitidulous ; metathorax reticulate and not very closely punctate with 

 the areola laterally indicated by two subparallel lines and the petiolar 

 area basally strong ; spiracles small and circular. Scutellum black (form 

 typ.) ; but sometimes dull red, rarely bright flavous, laterally towards its 

 base. Abdomen subcylindrical, as long and broad as the head and 

 thorax, densely aciculate-punctate and dull, becoming more nitidulous 

 towards the anus ; basal segment only slightly longer than broad, a little 

 more coarsely punctate and subcanaliculate to beyond its centre, trans- 

 versely impressed before its apex, and black with the apex at least later- 

 ally red ; second and third segments quadrate and dull red, with a discal 

 black fascia or infuscate lateral dots ; the remainder black, sometimes 

 with the fourth partly or wholly red ; terebra longer than the abdomen 

 (abdomen 4, terebra 4f, mm.), infuscate with the spicula red. Legs 

 neither elongate nor slender ; red, with only the base of all the tibiae 

 white. Wings iridescent-hyaline ; stigma and radius piceous ; radix and 

 tegulae pale stramineous, the latter sometimes basally infuscate ; areolet 

 irregularly triangular and not petiolate ; radial nervure straight, nervellus 

 intercepting at the lower third. Length, 6 — 7 mm. 



It is like L. bellator in size and colour, but the legs and antennae are 

 shorter and stouter, the abdomen duller, vertex immaculate, terebra much 

 shorter and it may at once be known from the rest of the species of this 

 genus by the distinctly white base of all the tibiae. Gravenhorst says it 

 is similar to Lamproiiata accusator, but with the legs more slender and 

 terebra longer. Schmiedeknecht, who overlooks Bridgman's reference to 

 it {loc. cit.), treats it as an insufficiently described species, which the 

 above account will now obviate, and following Thomson (O. E. xiii. 1425), 

 suggests (Opusc. Ichn. 1323) its synonymy with L. caiini/rons, Thoms., 

 which, however, has no white marking on the tibiae, the humeral marks 

 always and the vertical orbits often pale, etc., though in most respects 

 they appear analogous. 



I have seen no S ^^ith basally white tibiae, as one would anticipate 

 this species to possess, in default of which the var. anncola of L. bellator 

 might be suggested to fill this position. 



Gravenhorst knew but a single specimen, taken about Warmbrunn ; 

 and it does not seem to have been found on the Continent since 1829. 



