736 M. W. R. de V. GRAHAM 



Pteromalus nubeculosus Forster. Type apparently lost ; see Delucchi & Graham 

 (1956 : 544-545). The species was synonymized with fumipennis by Walker 

 himself (18486 : 219) and his remarks there suggest that he saw Forster's material 

 of nubeculosus when visiting Aachen. 



Isocyrtus (Trichomalus) coxalis Thomson. Syntypes on 40 pins. LECTOTYPE, 

 a female labelled " Lund " and " coxalis ", also bearing A. Jansson's lectotype label. 



Britain, Ireland, Sweden, Germany, Switzerland, Italy, Czechoslovakia. 

 Very common in the British Isles. 



Biology. Reared in England from clover-seed, probably as a parasite of Apion sp. 

 The females overwinter amongst the foliage of coniferous trees and, especially, 

 Ulex ; also on Buxus, in haystacks and similar dry situations. I have sometimes 

 found great numbers of the females congregated amongst dry, withered needles of 

 Ulex during the winter. Both sexes are common during the summer (chiefly 

 Aug.-Sept.). 



Note. Pteromalus obsessorius Forster (1841 : 26, $) belongs to the species-group of 

 campestris (Walker) and is probably the same as the latter. The wings, flagella, 

 and gaster of the type female, however, are missing, so that one cannot be absolutely 

 sure ; the type is labelled " obsessorius m.", in Forster's handwriting ; " Collect. 

 G. Mayr " ; and " Pt. obsessorius Forster Type ". 



Trichomalus placidus (Walker) comb. n. 



Eutelus placidus Walker, 1834 : 359, <J. 

 Pteromalus Learchus Walker, 1845 : 262, <J, syn. n. 



Type material. Eutelus placidus Walker. Syntypes, 2 £. LECTOTYPE, the 

 first specimen, bearing a Waterhouse label. 



Pteromalus learchus Walker. One male, which is accepted as the TYPE. 



The males of placidus may well belong to one of those species which is known in 

 the female sex only, and mentioned here under some other name. At present, 

 however, I cannot definitely correlate them with any females. 



Britain. 



Biology. Unknown. 



Trichomalus sp. indet. A 



Czechoslovakia : Podhof, near Prague, 1 <J, 16.vii.1963 (Graham) ; Dolni 

 Postevna, 1 $, 18.vii.1950 (A. Hoffer). 



I do not yet know the $ of this very distinct <$. 



Trichomalus sp. indet. B 



England : Berkshire, Wytham, 1 $, 12.vii.1960 (Graham). 



This $ appears to be rather distinct, but I do not wish to describe it at present. 



