754 M. W. R. de V. GRAHAM 



less prominent ; POL 1-3-1-4 times OOL. In front view the head is subtrapeziform, narrowing 

 towards the mouth, the genae converging quite strongly. Malar space half or slightly less than 

 half the length of an eye. Mandibles moderate-sized, both with 4 teeth. Antennae (Text-fig. 

 631) inserted well below the middle of the face, the lower edge of the toruli being level with the 

 ventral edge of the eyes ; scape as long as an eye and reaching the level of the median ocellus ; 

 combined length of pedicellus and flagellum distinctly less than the breadth of the head ; 

 pedicellus about twice as long as broad, rather longer than the anelli plus the first funicular 

 segment ; flagellum moderately clavate, funicle proximally not or only slightly stouter than the 

 pedicellus ; funicular segments subequal in length, 1-4 subquadrate, 5 quadrate or very slightly 

 transverse, 6 very slightly transverse. Occasionally the first funicular segment is very slightly 

 transverse and a shade shorter than the second. 



Thorax about i-6 times as long as broad. Pronotal collar with a fairly distinct though fine 

 margin, behind this reticulate with a smoother strip along the hind margin. Mesoscutum about 

 twice as broad as long, finely reticulate, a little more coarsely in the middle posteriorly ; 

 notauli fairly sharply impressed. Scutellum as long as the mesoscutum, rather finely reticulate. 

 Propodeum sloping at an angle of about 40 relative to the plane of the mesoscutum and scu- 

 tellum, medially about two thirds the length of the scutellum ; its median area somewhat 

 broader than long, rather finely reticulate, the nucha somewhat more coarsely ; nucha occupy- 

 ing slightly less than half the total length ; median carina sharp, plicae moderately so ; whole 

 callus very densely clothed with silvery white hairs which in some aspects completely hide the 

 surface. Fore wing with basal cell and basal vein bare ; veins thin, marginal vein slightly 

 shorter than the postmarginal and hardly 1-5 times as long as the stigmal vein ; surface of wing 

 beyond the speculum uniformly and rather densely haired. 



Gaster ovate, slightly acuminate apically, hardly broader than but slightly longer than the 

 thorax ; basal tergite (third abdominal) occupying rather more than one third of the whole 

 gaster, its lateral margins with several whitish hairs, as in Trichomalus species ; fourth less than 

 half as long as third ; 5-7 extremely short, transversely linear ; 8 slightly shorter than 4 ; 9 

 triangular, as long as its basal breadth ; tips of ovipositor sheaths just visible in dorsal view. 



o*. Differs from the 9 as follows : 



Antennae inserted very slightly above the ventral edge of the eyes. Scape reaching the 

 level of the vertex. Combined length of pedicellus almost equal to the breadth of the head. 

 Flagellum more slender, proximally not stouter than the pedicellus, and less clavate ; funicular 

 segments quadrate. 



Gaster nearly circular, much shorter but slightly broader than the thorax ; basal tergite 

 occupying more than half the total length, fourth abdominal tergite about one third the length 

 of the third, remaining tergites retracted and strongly transverse. 



This species closely resembles fucicola (Walker), especially in the dark colour 

 of the body and relatively dark legs, low insertion of the antennae, quadridentate 

 mandibles, structure and sculpture of the thorax, wing- venation, and shape of the 

 gaster. It differs from fucicola especially in its densely pilose propodeal callus, 

 also in some less obvious features as follows : 



The head is slightly more transverse (breadth : length in fucicola about 2:1) 

 with the temples shorter (in fucicola half or nearly half the length of the eyes). 

 The funicular segments are longer (in fucicola all are transverse, the proximal ones 

 at least very slightly, the distal ones obviously so) ; in fucicola the first funicular 

 segment is at least slightly shorter than the second, in dwarfs much shorter and 

 more like an anellus. The sculpture of the head and thorax is slightly denser so 

 that their surface is more opaque, particularly noticeable on the axillae, which are 

 dull, whereas in fucicola they are glittering. In albopilosus the plicae of the 

 propodeum proceed straight backwards from the base for a short distance and then 



