262 BRITISH ICHNEUMONS. 



Trip.e 



OPHIONIDES. 



This Tribe comprises some of our longest Ichneumonides, extending 

 to thirty millimetres in length, though the extremely slender bodies render 

 their appearance distinctly fragile. It differs from the whole remainder 

 of the Ophioninae in the fact that the cubical nervure emits the second 

 recurrent at an appreciable distance before the submarginal nervure ; the 

 only exception being in the case of the Continenental Hellwigiides, the 

 few species of which are very rare and at once known by the apically 

 clavate antennae. Authors have hitherto regarded Nolotrachys as the type 

 of a distinct Tribe, and indeed in respect of its somewhat supposititous 

 Coleopterous economy it would appear worthy of such a division, which 

 is characterised in the latest European conspectus by its unicalcarate 

 intermediate tibiae and even mesosternum; as well as by the poor charac- 

 ters of rugosely punctate mesonotum, short antennae and apically pro- 

 duced metathorax, which are in part shared by species of our genus Ophioti. 

 But as I have shown in my work on the world's Ophionides (A Revision 

 of the Ichneumonidae ; part i, Ophionides, 19 12, pp.67, 68), the tibial 

 character, that upon which it was mainly distinguished, is not reliable, 

 and we may with more propriety unite the two under a common heading. 



Table of Genera. 



Intermediate tibiae unicalcarate; 



antennae shorter than body . . NoTOTRACHYS, Marsh. 

 Intermediate tibiae bicalcarate; 



antennae strongl}' elongate. 

 Disco-cubital cell not corneous below 



stigma ; discoidal cell broad . . OPHION, Fab. 

 Disco-cubital cell corneous below 



stigma; discoidal cell narrow .. Henicospilus, Staph. 



. NOTOTRACHYS, Marshall. 

 Marsh. Trans. Ent. Soc. 1872, p. 260; Trachynotus, Gr. I.E. iii. 713 {ncc Latr.). 



Head posteriorly buccate, clypeus not discreted and apically reflexed, 

 mandibular teeth unequal in length and not slender; eyes internally not 

 or hardly emarginate, apically convergent. Antennae slender, filiform 

 and shorter than body. Thorax rugose or mainly smooth ; metathorax 

 longitudinally and transcostate throughout, with areae obsolete and spira- 

 cles sublinear. Scutellum circumcarinate. Abdomen petiolate and a 

 little compressed, spiracles beyond centre of first segment, terebra dis- 

 tinctly exserted. Legs slender and not elongate, anterior tibiae unical- 

 carate and hind ones curved, claws subpectinate only at their base. Wings 

 short and small, with neither glabrous areae nor corneous marks ; second 

 recurrent emitted from cubital before submarginal nervure; nervellus not 

 geniculate. Size not large ; palaearctic colour mainly black. 



