PTEROMALIDAE OF N.W. EUROPE 341 



blue- or bronze-green. Antennal clava with a strong constriction between 

 its first and second segments ; flagellar segments one to four not very dis- 

 similar in size, their combined length as great as that of the pedicellus. 



Hind tibial pecten (Text-fig. 281) hardly developed pallidum sp. n. (p. 345) 



- Fore wing with basal cell with at most two rows of hairs on the basal vein. 



Head and thorax less conspicuously metallic. Antennal clava with a 

 weaker constriction between its first and second segments ... 9 



9 (8) Antenna (Text-fig. 280) with fifth flagellar segment quadrate or only slightly 

 transverse ; flagellar segments one to three rather smaller than four, the 

 combined length of one to four rather less than that of the pedicellus. 

 Thorax relatively more arched dorsally. Hind tibial pecten hardly deve- 

 loped, much as in paludum sp. n. (Text-fig. 281) . herbacea sp. n. (p. 346) 

 Antenna with fifth flagellar segment nearly or quite twice as broad as long ; 

 segments one to four not very dissimilar in size, much as in Text-fig. 278, 

 their combined length as great as that of the pedicellus. Thorax weakly 

 arched, the upper surfaces of the scutellum, dorsellum, and propodeum lie 

 in nearly the same plane. Hind tibial pecten nearly as well-developed as in 

 penetrans (cf. Text-fig. 282) but more irregular basad and usually not quite 

 reaching the base of the tibia .... eximia Haliday (p. 345) 

 10 (6) Antenna : fifth flagellar segment with sensilla, and with bristles arranged 

 in two rows, one half to three quarters as long as the first claval segment, 

 distinctly longer than the fourth flagellar segment, at most i-6 times as 

 broad as long. Fore wing relatively shorter and broader, about 2-1 to 2-3 

 times as long as broad ..... chalybea Haliday (p. 349) 



- Antenna : fifth flagellar segment without sensilla, with bristles arranged 



in a single row, one third or slightly more than one third as long as the first 

 claval segment, not or only slightly longer than the fourth flagellar segment, 

 rather more than twice as broad as long. Fore wing relatively long and 

 narrow, about 2-4 to 2-5 times as long as broad . varicornis Haliday (p. 348) 



Pirene penetrans (Kirby) 

 (Text-figs. 271, 282) 



Ichneumon penetrans Kirby, 1800 : 109, pi. 4, figs. 10, 11, £ $. 

 Macroglenes oculatus Westwood, 1832 : 127, <$. 

 Macroglenes penetrans (Kirby) Haliday, 1844 : 295, $ $. 

 Macroglenes penetrans (Kirby) ; Curtis, i860 : 283. 



Macroglenes brevicornis Thomson, 1876 : 189, $ (ex parte (lectotype)], syn. n. 

 Macroglenes umbellatarum Ferriere, 1934 : fig. id [nee Haliday, 1844]. 

 Macroglenes penetrans (Kirby); Johansson, 1936 : 4-6, figs. 1, 1,$ $. 

 Macroglenes penetrans (Kirby) ; Peck, 1963 : 637. 



Type material. Ichneumon penetrans Kirby. No specimens which can be 

 definitely identified as the original material of penetrans exist in the BM(NH) ; there 

 is a series of 4 old specimens but 3 of these are Walker specimens and one is a 

 Haliday specimen. In Westwood's collection in Oxford there is one very ancient 

 female specimen, with a blue label and another reading " penetrans", which might 

 possibly be part of Kirby's original material. In this connection it is relevant to 

 note that Curtis, who was the first subsequent author to redescribe and figure 

 penetrans, published an interesting note (i860 : 283) as follows " Mr. Westwood . . . 

 has examined Mr. Kirby's original specimen of Ichneumon penetrans, and informs me 



