EXOCHIDES. 289 



of $ with mouth and a facial mark, of d 1 with mouth and whole 

 face, flavous ; clvpeus apically strongly depressed, subfoveolate ; 

 face glabrous and strongly nitidulous ; frons nearly smooth. 

 Antennae immaculate and (in <? ) flavescent beneath. Thorax 

 black, with the mesonotum somewhat dull and distinctly punctate; 

 callosities before and beneath radices, and in cf the sternum and 

 pleural sutures partly flavous ; metathoracic areola small, distinct 

 and subquadrate ; petiolar area large, finely scabriculous and 

 laterally carinate. Scutellum black. Abdomen cylindrical, more 

 or less broadly dull red centrally, not trans-impressed, of $ apically 

 compressed ; basal segment scabriculous and half as long again as 

 broad, parallel-sided and centrally impressed basally ; second seg- 

 ment aciculate to near its apex, with the gastrocceli distinctly 

 impressed ; remainder smooth and nitidulous, with no citriuous 

 markings. Legs slender and red ; anterior coxae flavidous, in $ 

 with their base and majority of the hind ones black. Wings 

 hyaline ; tegulae flavous ; nervellus subopposite and intercepted 

 slightly below its centre. 



Lenr/th 5 millim. 



PUNJAB : Simla, ix. 98 (Col. Nurse). EUROPE. 



Type in the Stockholm Museum. 



This species has been supposed to have a limited distribution 

 through Central and Northern Europe, but is evidently much more 

 wide-spread, since no doubt can be entertained respecting the 

 synonymy of Stissaba bicarinata, the unique tvpe of which I have 

 examined in Col. Nurse's collection ; in the latter the coloration of 

 the hind femora is somewhat darker than in typical specimens, but 

 I have taken males with blackish hind femora in Britain, where 

 this is an abundant species from May to October, though nowhere 

 yet bred in captivity. 



Tribe EXOCHIDES. 



The members of this tribe are instantly and infallibly recognised 

 from the whole of the other ICHNEUMO^ID^ by the peculiar con- 

 formation of the head. This, viewed from above, appears sub- 

 circular and stout, but laterally the contour is seen to be very 

 irregular, since the frons is strongly excavate above the antennae, 

 which rise from the upper margin of the strongly prominent face 

 in such a manner that the continuity of the head is entirely inter- 

 rupted in front by a transverse suleus behind the scrobes. The 

 face is strongly convex, continuous with the clypeus, and usually 

 coarsely and evenly punctate. The body is strongly nitidulous, 

 with the thorax discally subdeplanate, and the abdomen fusiform 

 and strongly convex. The legs are always more or less incrassate 

 and never elongate. The wings are narrow and often lack all 

 trace of an areolet, which would appear to be a somewhat incon- 

 stant feature in this group. 



u 



