Perispudus | BRITISH ICHNEUMONS. 231 

1. sulphuratus, Grav. 
Ichneumon sulphuratus, Gr. Vergl. Ubers. Zool. Syst. 1807, p. 258; Nov. Act. 
Acad. 1818, p. 285. Mesoleptus sulphuratus, Gr. I. E. ii. 81; i, Suppl. 685; 
Ste. Ill. M. vii. 225, ¢ ?; Fonsc. Ann. Soc. Fr. 1849, p.115, ¢. Perispudus sul- 
phuratus, Thoms. O. E. xix. 2022,¢ ¢. Var. Mesoleius Bignellit, Bridg. Trans. 
Ent. Soc. 1881, p. 163, pl. viii, fig, 12, ?. 
A handsome black species, with centrally pale abdomen and flavous 
tibiae. Head strongly punctate, of ¢ with face and mouth except apices 
of mandibles flavous, of 2 immaculate or rarely with palpi and man- 
dibular marks pale; clypeus apically truncate and laterally oblique. 
Antennae subsetaceous and a little shorter than body; scape and 
pedicellus black, in g flavous-marked beneath ; flagellum rufescent, in g 
infuscate above. Thorax immaculate; mesopleurae strongly sculptured 

and subcoriaceous; metathorax coriaceous, impressed before postscu- 
tellum, with no areae ; spiracles broad oval. Abdomen elongate-fusiform, 
nearly double length of head and thorax, and not broader than latter ; of 
@ red and of @ flavous, both with first segment except apically and apex 
of fourth to anus black; basal segment smooth, gradually slightly dilated 
apically, with subprominent and central spiracles ; postpetiole not extend- 
ing beyond the ventral membrane, and hardly margined posteriorly on 
either side; anus of Q clavately compressed, with valvulae apically tes- 
taceous. Legs red with hind coxae and femora black, all the tibiae 
stramineous with apices of hind ones, and base of @ anterior femora 
broadly, black; hind tarsi apically infuscate ; ¢ with anterior coxae, and 
all the trochanters, often black and sometimes flavous-marked; 9 with 
all coxae and trochanters black. Wings subflavescent ; stigma and radius 
fulvous, tegulae black and radix of ¢ paler; areolet petiolate and tri- 
