PTEROMALIDAE OF N.W. EUROPE 505 



Gaster as long as, or longer than, head plus thorax ; usually 2 to 4-5 times as 



long as broad, rarely somewhat less . . . . . . . 41 



3° (35) Small species, length 1 -7 to 2 -3 mm. Antennae with scape reaching only about 

 level with lower edge of median ocellus ; proximal segments of funicle not or 

 hardly longer than broad, distal segments at least very slightly transverse ; 

 sensilla in one, sometimes irregular, row on each funicular segment . . 37 



Larger species, length 2-5 to 3-1 mm. Antennae with scape reaching about 

 level with middle of median ocellus, or even to vertex ; proximal segments 

 of funicle at least slightly longer than broad, distal segments not, or at most 

 the sixth, transverse ; sensilla usually in two rows on each funicular 

 segment ............ 39 



37 (36) Antennal flagellum (Text-fig. 399) proximally more slender, not stouter than the 



pedicellus when the latter is seen in dorsal view, but thickening distad. 

 Fore wing with marginal vein 1 -5 to 1 -75 times as long as the stigmal vein ; 

 postmarginal vein distinctly shorter than the marginal vein 



H. scandiae sp. n. (p. 550) 

 Antennal flagellum proximally stouter, slightly to distinctly' stouter than the 

 pedicellus when the latter is seen in dorsal view. Fore wing with marginal 

 vein 1-15 to 1-45 times as long as the stigmal vein ..... 38 



38 (37) Postmarginal vein slightly to quite distinctly shorter than the marginal vein. 



Gaster 1-85 to 2 times as long as broad. Flagellum testaceous beneath 



H. tibiellus (Zetterstedt) (p. 550) 

 Postmarginal vein usually as long as, or very slightly longer than, the 

 marginal vein, rarely very slightly shorter. Gaster 1-4 to 1-9 times as long 

 as broad. Flagellum usually not paler beneath, apart from the sensilla 



H. brachygaster sp. n. (p. 549) 



39 (36) Head in dorsal view (Text-fig. 407) with temples nearly half as long as eyes. 



Fore wing with row of hairs on lower surface of costal cell complete. Anten- 

 nal flagellum bright testaceous beneath. Gaster longer than thorax, 1 -5 to 

 1 -9 times as long as broad. 



Propodeum, Text-fig. 376 . . . . H. parietinae sp. n. (p. 553) 



Head in dorsal view (Text-fig. 409) with temples one third, or slightly more than 

 one third, as long as eyes. Fore wing with row of hairs on lower surface of 

 costal cell usually widely broken in the middle. Antennal flagellum usually 

 black, sometimes obscurely testaceous beneath ..... 40 



40 (39) Pronotal collar, medially, from slightly more than one sixth, to slightly more 



than one fifth, as long as the mesoscutum. Gaster not longer than thorax, 

 1 -2 to 1 -6 times as long as broad ; last tergite at least slightly shorter than 

 its basal breadth. Head and thorax brightly metallic, green to blue, brassy, 

 or coppery. 



Propodeum, Text-fig. 377 ..... H. tr ipolii sp. n. (p. 551) 



Pronotal collar, medially at most slightly more than one sixth as long as the 

 mesoscutum. Gaster slightly longer than the thorax, 1-5 to 1-85 times as 

 long as broad ; last tergite as long as, or slightly longer than, its basal 

 breadth. Head and thorax with weaker metallic tints, bluish, bronze, or 

 olive ......... H. conformis sp. n. (p. 553) 



41 (35) Antennae with proximal segments of funicle quadrate, the first usually at 



least very slightly shorter than the pedicellus ; sensilla usually in one, 

 sometimes irregular, row on all funicular segments. Smaller species, 

 length i-8 to 2-5 mm. .......... 42 



Antennae with proximal segments of funicle at least slightly longer than 

 broad, the first usually as long as or longer than the pedicellus ; sensilla in 

 two rows on at least some of the funicular segments. Larger species, 



