BRITISH ICHNEUMONS. 219 



only slightly convex centrally ; mandibles bidendate, wiih the teeth sub- 

 equal and basally punctate ; cheeks and temples somewhat narrowed. 

 Antennae setaceous, joints cylindrical, the central ones slightly compresso- 

 dilated in d ; the basal sixteen to eighteen flagellar joints and often the 

 post-annellus bright fulvous, or the central joints fulvous with the basal 

 more or less infuscate ; the apical generally abruptly black above. Thorax 

 feebly scabriculous, black ; notauli distinct ; often with a pale dot before 

 radix ; areola transverse, apically truncate, narrowed in front, costae often 

 obsolete ; basal area distinct, coxal not discreted ; costulae usually entire ; 

 apophyses obsolete, tuberculiform ; spiracles elongate-oval, sub-equilateral. 

 Scutellum black, somewhat deplanate, shining, finely punctate and pilose ; 

 basal carinae not extending to its centre. Abdomen sub-linear, smooth 

 and shining, black, with incisures of first and second segments often ru- 

 fescent ; post-petiole gradually explanate from base to apex, smooth and 

 nitidulous ; gastrocaeli circular, small, sub-obsolete ; the four basal ventral 

 segments plicate and more or less piceous. Legs slender, clear red ; 

 coxae, trochanters, onychii, apices of hind tibiae and their tarsi black. 

 Wings often somewhat clouded ; stigma testaceous, radix and tegulae 

 piceous ; areolet sub-pentagonal, not strongly narrowed above. Length, 

 10-14 •I'"''''- 



No doubt can remain, I think, that this is the species recently described 

 by Berthoumieu under the above name, since Stephens distinctly says the 

 metathorax is unarmed and his description throughout is unusually lucid ; 

 there are, however, in his types in the British Museum no red dots before 

 the radix, the stigma is not piceous, and the tegulae are not, as stated 

 by Berthoumieu, red. Very probably these markings fade after death 

 through desiccation. 



In describing this species, Stephens says, " Not very uncommon within 

 the metropolitan district, occurring, in July, at Coombe Wood and Hert- 

 ford and in Salop." I took two males, upon flowers of Angelica syivestris, 

 at IVIatley Bog, in the New Forest, on August 19th, 1901. The only 

 circumstance that renders the synonymy of E. rujicornis doubtful is that it 

 is only recorded from Oran, in western Algeria. 



PRISTICEROS, Gravenhorsf. 

 Gr. I. E. i. (1829) 635. 



Head narrower than thorax, constricted posteriorly ; maxillary palpi 

 long, slender and setaceous. Antennae attenuate apically, slender and 

 elongate ; of $ internally strongly serrate and villose. Scutellum tri- 

 angular, sub-convex, laterally carinate from base to apex. Abdomen 

 elongate-oblong ; post-petiole sub-quadrate ; petiole slender. Legs sub- 

 elongate. Areolet triangular. 



This genus was erected by Gravenhorst for the reception of the following 

 species, on account of the extraordinarily serrate antennae of the 6 , which 

 sex he alone knew. Those of the ? are sub-normal and consequently it is 

 very probable this genus should be merged in the next, or vice versa, as 

 indeed has already been done by Berthoumieu. Being, however, of 

 opinion that good characters will yet be discovered by which the present 

 genus may be distinguished, I provisionally here retain it. 



