^fesochorus] BRITISH ICHNEUMONS. 335 



26. angustatus, Tlioins. 



Mcsoclioriis aiigiisfiitiis. Thorns. Ann. Soc. Knt. I'rance, 1SS5, p. 34;? ; Sclim. 

 Opusc. Ichn. 2003, rf ? . 



Black with apical margin of the second seginciit whitish, the basal 

 nervure continuous, and petiolar area short. Ilead with orbits, except at 

 vertex, narrowly testaceous ; paljji, clypeus, genal apices, and mandibles 

 except apically, llavous ; (J face pale piceous. Antennae black, with 

 basal joints of (J flavidous beneath. Thorax of 9 black w ith only radical 

 callosities whitish, of J with two obsolete pale mcsonotal vittae. Abdo- 

 men black with tlie second segment apically and thinl of 9 indistinctly, 

 and of J quadrately, in its centre rufescent or in J whitish ; anal styls 

 of (J very narrow and half length of basal segment. Legs dull testa- 

 ceous, with the anterior paler ; hind coxae of $ broadly and especially 

 discally nigrescent, of J paler; aj)ices of hind tibiae somewhat broadly, 

 their base and femoral apices, infiiscate. Stigma nigrescent with its base 

 and apex whitish, as also are tlie tegulae; areokt of (^ \cr\ rarely nearly 

 sessile. Length, 3-5 mm. 



From the last three species this dilTers in the petiolate alar areolet 

 emitting the recurrent nervure from its centre^ the hind coxae and a 

 central facial mark nigrescent, the face apically constricted, and the 

 somewhat elongate ^ anal styls black. 



Thomson described this species from Swedish Microgashr glomerahts ; 

 and subsequently Schmiedeknecht raised a pair from the same Braconid 

 in larvae oi Pieris brassicae m Germany. Not hitherto noted as J^ritish, 

 though doubtless common ; Capron had a full series from the vicinity of 

 Shere, on loth November Parkes sent me a dead female bred in 1900 

 from a batch oi Apaii/ilcs spiin'iis cocoons from Wednesbury, and on 15th 

 June I have swept it at Horning PY^rry in the Norfolk Broads. 



STICTOPISTHUS, Thomson. 

 Thorns. Ann. Soc. Ent. France, 1SS5, p. 344. 



A genus of small species, not exceeding some five nnn. in lengtli. Mead 

 with the face convex and the vertex not narrow. Thorax with the ba.sal 

 scutellar fovea transversely linear and metathoracic costae complete. 

 Abdominal terebra stout and at most half the length of basal segment, 

 which has the s])iiacles central and the postpetiole irregularly punctate-. 

 Legs stout. \\'ings with areolet broadly sessile ; lower ba.sal nervure 

 postfurcal ; parallel nervure emilteil from a little below centre of brachial 

 cell ; nervellus not intercepted, generally oblicjue and antefurcal. Face 

 broad and llv scrobes further from each other than from the eyes. 



Known by the jjosition of the i)arallel nervure, the incontinuous ba.sal 

 nervure, short teribra and postpeliolar subaciculation. One species is 

 still of somewhat uncertain location, forming a link between the present 

 genus and the last section ot the main genus, just dealt u ith. 



Tabic iif species. 



(2). !. Testaceous-marked, with the mcsono- 



tiim not punctate . . 1 . i omi'I. \n \ 1 i •>. //,//. 



(1). 2. Not testaceous-marked ; niesonoluni 



distinctly punctate. 



