EXOCniDES. 2Sf) 



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

 face, flavous ; clypeus apicall}^ strongly depressed, subfoveolate ; 

 face glabrous and strongly uitidulous ; frons nearly smooth. 

 Antennce immaculate and (in ^ ) flavescent beneath. Thorax 

 black, with the mesonotum somewhat dull and distinctly punctate; 

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

 pleural sutures partly flavous ; metathoracic areola small, distinel. 

 and subquadrate ; petiolar area large, finely scabriculous and 

 laterally carinate. Scufellum 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 gastroctcli distinctly 

 impressed ; remainder smooth and nitidulous, with no citrinous 

 markings. Ler/s slender and I'ed ; anterior coxte flavidous, in $ 

 with their base and majority of the hind ones black. Winf/.^ 

 hyaline : tegulfe flavous ; nervellus subopposite and intercepted 

 slightly below its centre. 

 Lenr/th 5 millim. 



PuxjAB : Siuda, ix. 98 f Co/. i\'Hyse). Europe. 

 T)/pe in, the Stockholm Museum. 



Tins species has been supposed to have a limited distribution 

 through Central and IXorthern Europe, but is evidently unich more 

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

 synonymy of Sussaba bicarinata, the unique tvpe of wliich 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 IJritain, 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 IciiNEUMO>rii)yK 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 tlie frons is strongly excavate above the antenna>, 

 which rise from the up])er margin of the strongly prominent face 

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

 rupted in front by a transverse sulcus behind the scrobes. 'J'he 

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

 coarsely and evenly punctate. The body is strongly nifidulous, 

 with the thorax discally subdeplanate, and the abdomen fusiForin 

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

 and never elonjjate. The wings are narrow and often hick all 

 trace of an areolct, whicli would a|)pc'ar to be a somewhat incon- 

 stant feature in this group. 



IT 



