WALLACEA. 25 



Antennae placed just above middle of bead, first two joints short, 

 normal ; 3rd elongate, twice as long as first two together, 5-annu- 

 lated, with a style as long as the 3rd joint itself. Proboscis and 

 palpi small. Thorax subquadrate, very arched, slightly inflated on 

 each side behind the very distinct suture ; scutellum large, thick, 

 bluntly pointed at tip and projected somewhat upwards, with two 

 hardly distinct short blunt spines. Abdomen rounded, thick, as 

 long as but distinctly broader than the thorax. Legs short, simple, 

 slender. Wings normal ; discal cell very large. 



Range. India and Ceylon. 



The genotype is the only known species. 



6. Wallacea argentea, Dol. (PI. I, fig. 3.) 



Wallacea argentea,T)o\efich.si\\, Nat. Tijd. Ned. Ind. xvii, p. 82 (1858) ; 



Brunetti, flee. Ind. Mus. i, p. 101 (1907). 

 Gabaza arc/entea, Walker, Proc. Lima. Soc. hi, p. 80 (1859). 

 Pachygaster nigrofemorata, Brunetti, Rec. Ind. Mus. vii, p. 499 



(1912). 



6 $ • Head with the eyes in J practically contiguous for about 

 one-third of the distance from vertex to antennae, leaving a slightly 

 elougate vertical shining black triangle and a much smaller frontal 

 triangle which is shimmering white, as are the sides of the face ; 

 rest of face and lower- part of head black ; proboscis dark brownish 

 yellow ; antennae orange or yellowish ; 3rd joint rather broader 

 in $ than <3 , with six annulaticns, the two basal ones the broadest ; 

 style whitish, 2-segmented, 1st very minute, tip of 2nd curved. 

 In 5 , frons shining black, sparse short whitish hairs on upper 

 part ; two small round white hair-spots contiguous to eyes just 

 above level of antennae ; margins of face with a thin line of snow- 

 white hairs. Thorax shining black, in $ with broad band of 

 golden yellow, almost tomentose pubescence on hinder half of dor- 

 sum, generally but not always reaching side-margins and always 

 extending as far as the scutellum, which is wholly black ; the 

 whole dorsum similarly covered in $ , as is the scutellum also ; 

 sides with very sparse inconspicuous pale pubescence. Abdomen 

 moderately shining black, with very short whitish pubescence, 

 which is sparser in the 5 ; venter shining black, bare. Legs 

 yellow ; femora black, tips narrowly yellowish ; tibiae a little 

 brownish about the middle ; extreme tips of tarsi brownish ; 

 femora with soft hairs, tibiae and tarsi minutely pubescent. 

 Wings clear ; stigma, anterior veins, and halteres yellowish. 



Length, about 3 mm. 



Described from a long series in the Pusa and Indian Museum 

 collections. Pusa, 22. v. 1908, in bark of Eryihrissa sp., 

 17. xii. 1914, under bark of Ficus lavica, 15. ii. 1916, on rotten 

 papaya stem ; Ivatihar, 12. x. 1907; Bombay, vii-ix. 1912 ; Cal- 

 cutta, 8. i. 1906, 22. i. 1908, 14.iii.1907, 6. ii. 1908 ; Pollibetta, 

 Coorg, 15-26. v. 1914, 24. x. 1915, 16. xi. 1915 (Fletcher). 



