Pezomnchlls^^ BRITISH ICHNEUMONS. 207 



$. Apterous. Mesonotum shining and sub-glabrous, with the petiolar 

 area well-defined. Scutellum distinct, with its lateral margins elevated. 

 Abdomen oblong, nitidulous and sparsely pubescent. 



Black, with the legs entirely flavous. Length, 3-4 mm. 



Both sexes closely resemble P. ineplus, Forst., but the female is darker, 

 more shining and diffusely punctate, with the legs not unicolorous ; and the 

 male differs in having the petiole shorter, the post-petiole quadrate and the 

 wings not or barely indicated. From J', fiii^'rifi/s, the female may be known 

 by the elongate mesonotum and diffuse puncturation, and the male by its 

 absence of wings. I consider Thomson has quite failed to adduce any 

 specific character for his P. grandiceps, unless it be that the post-petiole is 

 slightly more strongly dilated. 



Land's End district (Marquand) ; found among coarse herbage in 

 Dorsetshire (Entom. i88r, p. 137); taken at Oxshott in the middle of 

 October, 1900 (Beaumont); one at Charing in Kent, in May (Chitty). 

 I possess a single pair captured by Piffard at Felden in Herts., and a 

 female which I swept at dusk in a lane at Winterton in Norfolk, in 

 June, 1901. 



29. gonatopinus, Thorns. 

 PezoiiiacJius Gonatopimis, Thorns. O. E. x. lOoS, i 9. 



$ 9 • Head nearly cubical with the face inflexed ; genal sulcus want- 

 ing, its costa inflexed ; eyes sub-circular ; mandibles strongly attenuate 

 apically ; clypeus apically truncate and sub-marginate, vertex very broad. 

 Antennae filiform and very slender, nearly as long as the body ; basal 

 flagellar joint as long as the second, twice longer than the scape and about 

 five times longer than broad ; fifth twice longer than broad. Thorax 

 elongate, narrow and compressed, centrally constricted ; metathorax con- 

 vex, with the petiolar area shorter than the metanotum, its basal costa and 

 apophyses wanting ; acetabula well defined, e[)icnemia wanting. Scutellum 

 very conspicuous, trianglar and convex, though not basally discreted. 

 Abdomen closely punctate with long dense brunneous pubescence ; basal 

 segment short, convex, broad at base and very little broader at apex, 

 almost shorter than the hind coxae, with spiracles sub-prominent ; terebra 

 distinctly shorter than the basal segment, its spicula acuminate. Hind 

 tibiae strongly sinuate. 



Black ; legs piceous with the apices of the femora, base of tarsi and 

 whole of the tibiae bright red ; spicula fulvous. Length, \-2\ mm. 



This species resembles P. authracinus in its dark body and long, slender 

 legs, therefrom it may be known by its cubical head, centrally constricted 

 thorax, gibbous metanotum, and in the shorter, broader and more convex 

 petiole in both sexes. In size it more nearly approaches P. in/erniedius, 

 from which the sha[)e of the head and colour of tiie legs materially differ. 



I possess a single female of this species, which is new to our fauna, 

 captured by the late Mr. Alfred Beaumont, at Kilniore in Ireland, on 

 20th August, 189S. 



Thomson describes it from Oland, an island off Sweden, in the Baltic 

 Sea. 



