Linnnriiim'] BRiriSH ICHNEUMONS. 113 



iiuniarulatc bhu'k ; basal sc^incnl with petiole broad and its lateral sulci 

 sometimes deeply impressed; postpetiole broad with no lateral scrobcs, 

 but sometimes a fine impressed line extendin<; from its apex to si)iracles; 

 si'venth segment incised, though rar{>ly emarginate; tcrebra stout, curved, 

 hardly as long as hall" the abdomen. Legs somewhat stout, with the 

 coxae not pale; basal hind tarsal joint nearly always white-banded; claws 

 pectinate at least towards their base. Wings with the lower basal nervure 

 not oblique; areolet somewhat large, not sessile, generally subregular 

 and emitting the hardly or but slightly oblique recurrent nervure from its 

 centre; radial cell not broad, with its basal and apical abscissae nearly 

 equally curved; apical angle of the discoidal cell not or hardly acute 

 below ; nervellus neither oblique nor geniculate. 



This is known from all other Campoplegid genera by having the meta- 

 thoracic spiracles circular, the clypeus apically mutic, the eyes glabrous 

 and not internally distinctly emarginate, with the petiolar area centrally 

 broadly excavate and the nervellus neither oblique nor geniculate. Onl}- 

 Oinorgus has an equally deeply impressed petiolar area, and in that genus 

 the nervellus is both oblique and geniculate, with the postpetiole much 

 more convex and laterally rounded; as in CanidicUa, the lower basal 

 nervure is here distinctly a little inflexed at its lower extremity. 



All the remaining genera of the Campoplegides (for Aiigi/ia is hardly 

 now used in its original sense), except the next one, were grouped under 

 the comprehensive genus Limnciia by Holmgren in 1858 and comprised 

 all the smaller Cainpoplcx-?,^ec\(i?> of Gravenhorst: to a bewildering 

 number, as will be seen in the synonymic index. Of this bnxid genus 

 Limncn'a, ^Marshall enumerated seventy-three species as British in 1872 

 and Bridg. -Fitch tabulated (for the most part upon colour distinctions) 

 one hundred and eight in 1885, at which date nearly fifty were known in 

 the female and four or five in the male sex only. Great progress is 

 noticeable since that time and we now have stable characters by which to 

 divide them up into less unwieldy groups ; this we owe almost entirely 

 to the very excellent system of Prof. Thomson, who did not adopt the 

 impossible and typeless genera sketched by Forster in 1868, but often 

 erected genera with so similar, though always different, a name that one 

 is enabled to distinguish which group bethought might perhaps represent 

 Forster's title. Little has been added to this revolution in our know- 

 ledge since 1887, and the smaller Campoplegides are admittedly among 

 the most difTicult groups of the Ichneumonidae. 



Great care has been nccessarv to assign our hundred Limiuritu to their 

 correct modern genera, but I find at length there are still half-a-dozen 

 outstanding, which have defied all my efforts to relegate to any satis- 

 factory position. These are, consecjuently, practically useless names; I 

 can do no more than i)resent the descriptit)ns of authors and place them 

 under the? i^resent genus as that nowadays typifying, though in so very 

 restricted a form, the old Limmria of Holmgren; no nuire can be done 

 towards their chicidalion till the type specimens be re-examined. 



Tabic of Species. 

 (8). I. Basal area obsolete; hind tibiae 



black at apex and before base. 

 (5). 2. Lateral petiolar sulci tine ; hind tibiae 



centrally white. 

 (4). 3. Larger; hind femora entirely red 



throughout i. ALIUDIM, Gincl. 



