PTEROMALIDAE OF N.W. EUROPE 315 



broad as long, shiny, with fine delicate, for the most part engraved, sculpture ; mid lobe rather 

 sparsely haired ; notauli deep, slightly curved. Scutellum somewhat longer than the 

 mesoscutum, slightly longer than broad, strongly convex in the transverse axis, with sculpture 

 like that of the mesoscutum but rather finer, with two pairs of bristles ; frenum only weakly 

 marked off medially by an extremely fine line ; the scutello-axillar sutures converge only 

 moderately and meet the mesoscutum slightly mesad of the hind ends of the notauli, the base 

 of the scutellum being about one fifth the breadth of the mesoscutum. Axillae with sculpture 

 like that of the scutellum, but slightly weaker at their inner angles, which are therefore slightly 

 more shiny. Dorsellum about half as long as the frenum, shiny, nearly smooth. Propodeum 

 rather deeply emarginate medially, when its length is hardly one-quarter that of the scutellum, 

 shiny and weakly alutaceous ; median carina present, plicae absent ; spiracles subcircular, 

 separated by about half their diameter from the metanotum ; callus with three to five bristles. 

 Metapleuron and mesopleuron shiny, with rather fine delicate, hardly raised, sculpture ; the 

 triangular area of the mesepisternum is smoother ; mesepimeron distinctly marked off, nearly 

 three times as long as broad ; mesosternum shiny and almost smooth, its mesolcus distinctly 

 impressed. Legs moderately short though not stout ; hind coxae hardly twice as long as broad, 

 shiny, with moderately fine hardly raised reticulation, dorsally with a few hairs ; spur of mid 

 tibia slightly more than three quarters the length of the first tarsal segment. Fore wing (Text- 

 fig. 256) about twice as long as broad ; costal cell broad (length : breadth about 9 : 1), its 

 lower surface with scattered hairs, its upper surface bare except for a row of several hairs in the 

 distal third ; basal vein pilose, basal cell bare except for a few hairs near those of the basal 

 vein ; speculum rather narrow, open or only partly closed below, on upperside of wing extending 

 below the marginal vein for about half the length of the latter ; space between postmarginal 

 and stigmal veins partly bare on upper surface of wing ; disc moderately thickly haired ; mar- 

 ginal vein i-6 to 1-7 times as long as the postmarginal and 2-25 to 2-4 times as long as the 

 stigmal vein ; stigmal vein slightly curved ; stigma moderate-sized, oval or subrectangular, 

 with a moderately long uncus. Petiole of gaster strongly transverse. Gaster, excluding the 

 ovipositor sheaths, oval, about as long and as broad as the thorax, subobtuse apically, 1-5 to i-6 

 times as long as broad ; base of first tergite convex medially, with a longitudinal impression 

 on each side ; disc of gaster sunken dorsally ; ovipositor sheaths slightly exserted ; gaster 

 ventrally convex, hypopygium extending slightly less than half its length. 

 <$. Not definitely associated. 



This species closely resembles crassus Walker, which differs in having the ovipositor 

 sheaths more strongly exserted, the marginal vein 2-5-2-8 times as long as the stigmal 

 vein, the speculum extending as far as the latter, the scutellum with 3 pairs of 

 bristles ; the anterior margin of the clypeus evenly curved, and the propodeal 

 spiracles closer to the metanotum. 



Holotype $. Scotland : Mid Perth, Kenmore, Taymouth Castle, 2.vii.i953, 

 swept from grass under beeches (Fagus) (Graham), in Hope Department, University 

 Museum, Oxford. 



Paratypes. Same data as holotype, 1 $ ; Mid Perth, Lawers, 1 $, 11.vii.1952 

 (Graham). Ireland : Co. Down, Tollymore Park, 2 $, 24. vi. 1957 (Graham), in 

 Graham collection. 



Biology. Unknown. 



Gastrancistrus clavellatus sp. n. 



$. Bronze to coppery bronze ; propodeum and basal tergite of gaster greenish-tinged ; 

 lower face and genae sometimes partly greenish. Antennae testaceous ; pedicellus infuscate 



