688 M. W. R. de V. GRAHAM 



Key to European Species 

 (Females) 

 i Antenna with three anelli and five funicular segments ; combined length of pedicellus 

 and flagellum less than breadth of head ; flagellum strongly clavate, all the 

 funicular segments strongly transverse ; clava slightly longer than the three pre- 

 ceding funicular segments together ; both mandibles with three teeth 



viride (Thomson) (p. 690) 

 - Antenna (Text-fig. 558) with two anelli and six funicular segments ; combined length 

 of pedicellus and flagellum fully equal to, or slightly greater than, the breadth of 

 the head ; flagellum slightly clavate, the funicular segments only slightly trans- 

 verse ; clava slightly shorter than the three preceding funicular segments together ; 

 left mandible with three teeth, right mandible with four. 



Fore wing venation, Text-fig. 560 .... bianellatum sp. n. (p. 



(Males) 



1 Antenna with three anelli and five funicular segments ; combined length of pedicellus 

 and flagellum barely equal to the breadth of the head ; all the funicular segments 

 slightly transverse ; clava about as long as the three preceding funicular segments 

 together ; both mandibles with three teeth . . . viride (Thomson) (p. 690) 



- Antenna (Text-fig. 559) with two anelli and six funicular segments ; combined 

 length of pedicellus and flagellum slightly greater than the breadth of the head ; 

 funicular segments subquadrate ; clava slightly shorter than the three preceding 

 funicular segments together ; left mandible with three teeth, right mandible with 

 four ......... bianellatum sp. n. (p. 688) 



Lampoterma bianellatum sp. n. 



$. Head, thorax and gaster green to bluish green, some parts occasionally tending towards 

 brassy. Antennal scape and pedicellus black, the former distinctly, the latter faintly, metallic- 

 tinged ; flagellum fuscous to black. Coxae concolorous with the thorax ; trochanters partly 

 testaceous ; femora blackish with a metallic gloss, their tips testaceous; tibiae testaceous at 

 base and apex, otherwise brownish, or mid and hind tibiae blackish with a metallic gloss ; 

 tarsi testaceous with their fifth segment brown. Tegulae brown, or testaceous basally. Wings 

 subhyaline ; venation greyish testaceous. Length 1-75 to 2 mm. 



Head (dorsal view) about 1-25 times as broad as the mesoscutum, 2-1 to 2-15 times as broad 

 as long ; temples rather strongly convergent, their outline curved, about one quarter as long 

 as an eye ; ocelli in a triangle of about 120 , POL nearly twice OOL. Head (front view) 

 subtrapeziform, about 1-25 times as broad as high ; eyes separated by about 1-25 times their 

 own length, inner orbits almost parallel, hardly diverging ventrad ; malar space about 0-4 

 length of eye, genae converging moderately strongly towards the mouth, their outline only 

 slightly curved ; breadth of mouth-opening about 2-5 times the malar space. Mandibles small, 

 the left one with three, the right with four, teeth. Head somewhat glittering, the reticulation 

 relatively fine, especially on the face, and not strongly raised ; the areoles composing it tend to 

 be somewhat elongated transversely on the vertex, longitudinally on the frons and temples. 

 Clypeus reticulate with only a slight tendency towards strigosity, its anterior margin more or 

 less broadly smooth and polished. Antennae (Text-fig. 558) inserted distinctly above the 

 ventral edge of the eyes, but a little nearer to the anterior margin of the clypeus than to the 

 median ocellus ; scape hardly three quarters the length of an eye ; pedicellus about 1-7 times 

 as long as broad ; combined length of pedicellus and flagellum about equal to, or slightly greater 

 than, the breadth of the head ; funicle proximally slightly stouter than the pedicellus, becoming 

 very slightly thicker distad, its segments slightly to distinctly transverse ; clava hardly more 

 than twice as long as broad, slightly shorter than the three preceding funicular segments to- 

 gether. Flagellum with subdecumbent hairs. 



