312 M. W. R. de V. GRAHAM 



Britain, Czechoslovakia, apparently rare. New records. England : Berk- 

 shire, Wytham, 22. vi. i960, 1 $ (R. R. Askew). Czechoslovakia : Slovak Paradis, 

 Klastorisko, 27.vii.1965, 1 $ (Graham). 



Biology. Unknown. 



Gastrancistrus vagans Westwood 

 (Text-fig. 260) 



Gastrancistrus vagans Westwood, 1833 : 444, $. 

 ? Gastrancistrus tenebricosus Walker, 1834 : 174, o*- 

 Gastrancistrus Pacilus Walker, 1848 : 105, 160, 9. syn. n. 



Type material. Gastrancistrus vagans Westwood. LECTOTYPE (possibly 

 holotype) $ in Westwood coll., labelled in Westwood's handwriting " Cb. [Coombe] 

 102 $. beginning of summer " and " GASTRANCISTRUS vagans Westw. Phil. 

 Mag.". 



G. tenebricosus Walker. Two males stand under this name but one (a Psilocera) 

 is possibly not a syntype. LECTOTYPE, the other male, bearing a Waterhouse 

 label ; it is probably a male of vagans. 



G. pacilus Walker. One female, LECTOTYPE, bearing a Waterhouse label, also 

 one in C. Ferriere's handwriting " Type C.F.". 



Britain, apparently rare ; Surrey, Coombe Wood (Westwood) ; Berkshire, 

 Wytham Wood, 1 $, 21. iv. 1959 (Graham). 



Biology. Unknown. 



The species recorded as vagans by Walker (1834 : T 73) was really atropurpureus 

 (q.v.). 



Gastrancistrus affinis sp. n. 



$. Body for the most part bronze-black ; propodeum, and gaster more or less, at least at 

 its base, green ; front of head, and mid lobe of mesoscutum often more or less greenish, side 

 lobes of mesoscutum obscurely bluish. Mandibles mainly reddish testaceous. Antennal 

 scape usually wholly testaceous, sometimes ± infuscate dorsally ; pedicellus and flagellum 

 brown or fuscous, ± testaceous beneath. Coxae, and femora except their tips broadly, bronze- 

 black ; trochanters partly testaceous ; tibiae usually bright testaceous, occasionally slightly 

 infuscate medially ; tarsi testaceous, their tips brown. Tegulae fuscous. Wings subhyaline ; 

 venation testaceous, or more or less brown. Length i-8 to 2-05 mm. 



Head hardly 1-2 times the breadth of the mesoscutum, in dorsal view about 2-25 times as 

 broad as long ; temples receding strongly and only about one tenth the length of the eyes ; 

 POL nearly twice OOL, ocelli in a triangle whose base is nearly 2-5 times its height. Head in 

 front view as broad as high. Eyes 2-25 to 2-5 times the malar space, separated by about 1-3 

 times their length. Breadth of oral fossa about three times the malar space. Anterior margin 

 of clypeus evenly, fairly strongly curved. Antennal scape o-8 to 0-85 the length of an eye, and 

 not or only very slightly longer than the transverse diameter of an eye, not reaching the median 

 ocellus ; combined length of pedicellus and flagellum about equal to breadth of head ; pedicellus 

 i-6 to 1-7 times as long as broad, as long as, or usually slightly longer than, the first funicular 

 segment ; flagellum moderately clavate ; funicle proximally hardly stouter than the pedicellus, 

 but thickening slightly distad, its first segment slightly elongate or quadrate, second and third 



