258 BRITISH ICHNEUMONS. [Lampronola. 



Felden, in Herts., and Capron at Shere, in Surrey, the latter being mixed, 

 as this species doubtless often is, with Z. melancholica. Haliday's L. den- 

 ficoniis, which is only doubtfully synonymous, was found by him in pine 

 woods in Ireland during the autumn. 



Tribe 



ACAENITIDES. 



This Tribe consists of several aberrant genera, of which Acaeiiihis, 

 Arotes and Collvria appear sufficiently closely related. Of the rest, Coko- 

 centrus is intermediate between the Piviplinae and the Ophionid genus 

 Anojvahm, Oedematopsis might w ith more propriety be placed in the Try- 

 photihure and the two final genera are superficially like some of the Heniite- 

 lini. If relegated to the Pimplinae, all fall into the present Tribe on 

 account of their elongate hypopygium, which entirely conceals the base 

 of their terebra, and in many cases extends to or even beyond the abdom- 

 inal apex. The first four genera are stout insects with elongate and 

 incrassate hind legs, and short, subclaviform antennae ; the next three 

 are much smaller and more slender species with elongate, filiform anten- 

 nae, often exceeding the body in length, and the legs normal and slender. 

 The majority are rare and we know the economy of but two species with 

 any degree of certainty. 



Table of Genera. 



(8). I. Hind legs stout and elongate; an- 

 tennae stout, about half length of 

 body. 



Clypeus apically produced centrally ; 

 face not radiately strigose. 



Areolet wanting; metathoracic spira- 

 cles linear. 



Head transverse ; hind tibiae stout ; 



hypopygium acuminate . . AcAENITUS, Latr. 



Head subcubical ; tibiae normal ; hy- 

 popygium subtruncate COLLYRIA, Schiod. 



Areolet triangular ; metathoracic 



spiracles oval COLEOCENTRUS, Grav. 



Clypeus apically truncate ; face cen- 

 trally radiately strigose . . . . Arotes, Grav. 



Hind legs normal ; antennae about as 

 long as the body. 

 9. Clypeus as long as face and in 9 tu- 

 berculate ; terebra normal. 



Areolet wanting; abdomen coriaceous Oedematopsis, l^schek. 



Areolet present ; abdomen not coria- 

 ceous DiADEGMA, Mori. 



Clypeus normal ; terebra reflexed or 

 incrassate centrally. 



Abdomen subpetiolate ; legs and an- 

 tennae elongate ; areolet wanting Thymaris, Fbrst. 

 14. Abdomen sessile ; legs and antennae 



short ; areolet entire . . . . APHANOROPTRUM, Forst. 



