Aroks.] BRITISH ICHNEUMONS. 267 



1. albicinctus, Gvav. 



Arotes albicinctus, Gr. I. E. iii. 448, i ? ; Ste. 111. M. vii. Suppl. 2, pi. xxxvi, 

 fig. 4, ? ; Voll. Schets. I. pi. ii, fig. 18, ? . 



9 . Head subquadrate and not narrowed behind the eyes ; vertex 

 someuhat dull with large and sparse punctures ; frons strongly excavate, 

 closely and coarsely punctate with a strong carina extending from the 

 lower ocellus to the radiately strigose epistoma ; face dull and coarsely 

 punctate ; clypeus not laterally discreted but strigose, centrally glabrous, 

 apically punctate and truncate with a red dot on either side ; mandibles 

 stout, convex, red, basally strigose and apically black with the lower tooth 

 rather the longer ; palpi infuscate with the two apical joints subcylindrical. 

 Antennae black, filiform throughout, apically obtuse, with a six-jointed 

 white band distinctly beyond the centre. Thorax immaculate ; notauli 

 very deeply impressed ; metathorax indistinctly sculptured with the areae 

 subcomplete ; basal area very long, areola almost transverse and emitting 

 the costulae from before its centre ; petiolar area distinct, entire and 

 strongly transstrigose ; spiracles very large and strongly elongate, sub- 

 linear. Scutellum black, deplanate, punctate with black pilosity and later- 

 ally bordered from the base to beyond its centre. Abdomen black with 

 the apices of the basal segments more or less broadly flavous ; basal seg- 

 ment subglabrous and nearly linear, only a little explanatc apically with 

 the spiracles before the centre and an inconstant discal fovea or canalicu- 

 lation at its posterior third ; anus strongly compressed, hypopygium very 

 large, acuminate, ferrugineous and extending beyond anus : terebra as 

 long as the body, with the spicula very fine, and the obsoletely pilose val- 

 vulae distinctly dilated before their castaneous and truncate apices. Legs 

 black with the hind ones distinctly stout and elongate ; anterior tibiae 

 and front femora internally pale testaceous ; front tarsi at the base, and 

 their calcaria, curved ; hind femora tuberculiformly produced beneath 

 before their apices ; the cur\-ed hind tibiae at their extreme base and the 

 four apical joints of their tarsi white ; tarsal claws strong and distinctly 

 bifid internally in the centre, with obsolete pulvilli. Wings fulvescent 

 with the stigma ferrugineous and tegulae black ; arcolet wanting ; second 

 recurrent nervure emitted from the internal cubital before the inner sub- 

 marginal ; nervure near .stigma nmch thickened ; nervellus strongly 

 arcuate, subopposite and intercepting in the centre. Length, 15 mm. 



(^ differs only in having the whole face, mouth and frontal orbits fla- 

 vous ; the antennae with no pale band ; scape flavous, and flagellum tes- 

 taceous, beneath ; all the flagellar joints apically nodulose; postscutellum 

 usually pale ; and the areola quadrate. 



The above description of this hitherto inadequately diagnosed species 

 is drawn from eight specimens of both sexes in the British Museum, of 



