BRITISH ICHNEUMONS. 285 



Thorax black, with centre of pronotum and callosity at radix fulvous. 

 Abdomen black, central segments cylindrical ; terebra shortly exserted. 

 Legs slender, red ; hind coxae and apices of their tibiae sometimes infus- 

 cate. Stigma, radix and tegulae stramineous, the last sometimes piceous. 

 Length, 8 mm. 



Scarce, found in June near London (Stephens). This appears to be the 

 only British record of this species, which occurs elsewhere only in Germany 

 and has not been bred ; its inclusion in our list must consequently be 

 regarded with due reserve. 



2. rufipes, Westn. 



IscJunis rufipes, Wesm. Bui. Ac. Biux. 184S, p. 332, <? ; Holmgr. Ichn. Suec. iii. 

 353 ; Thorns. O. E. xv. 1625 ; Berth. Ann. Soc. Fr. 1896, p. 390, i ?. 



Head black ; palpi and mandibles pale. Antennal flagellum ferrugineous 

 or fuscous beneath, of $ centrally semi-annulated with white or pale red. 

 Thorax and abdomen strongly punctate, black ; the latter with central 

 segments laterally castaneous ; the incisures of second and third deeply 

 impressed, the latter sub-quadrate ; terebra slightly reflexed. Legs red ; 

 hind tibiae towards their apices, and the posterior tarsi, infuscate. Stigma 

 stramineous ; radix and tegulae white. Length, 6-7 mm. 



From Ischnus, this species may be known, besides the generic characters, 

 by its shorter thorax, distinct petiolar area, smaller eyes and more elongate 

 cheeks. The $ is very similar to /. thoracicus, but its head is more 

 strongly punctate, the legs slightly shorter and the petiole a little more 

 slender ; it has the scutellum black and the stigma stramineous. 



Marshall first introduced this species as British in his 1872 catalogue, 

 but I know of no definite records, and it has not been bred. Germany 

 appears to be its headquarters, though it is also found in Belgium and 

 France, where M. Pic has taken it during hibernation in December. 



T R AC H VARUS, Thomson. 

 Thorns. O. E. xv. (1S91), 1607 et 1612. 



Head sub-triangular ; frons nitidulous, sub-glabrous ; mandibles weak, 

 with the teeth of equal length. Flagellum slender. Thorax sub-nitidulous; 

 metanotum gradually declived from base to apex ; petiolar area reaching 

 nearly to the base. Abdomen a little longer than the thorax, scabrous ; 

 basal segment sub-deplanate, second with distinct and transversely oval 

 thyridii. Intermediate coxae sub-globose. Wings with the areolet some- 

 times incomplete and the discoidal cell acutely produced at its lower angle. 



This genus, its author tells us, closely approaches HeinicJuieumon in the 

 structure of the wing-nervures and its somewhat deplanate basal segment, 

 but differs both in its elongate petiolar area and in its triangular head. 



I. corvinus. Thorns. 



Trachyanis corvimts, Tlioms. O. E. xv. 1612, S ? . 



Black. Head broader than thorax, narrowed behind the eyes ; vertex 

 not broad ; clypeus not discreted, apically rotund, of c^ white. Antennae 



