4GS Mr. T. D. A. Cockerell — Descriptions and 



with the first two segments red, the others reddish black, 

 the third red basally at the sides ; legs bright yellow. 

 Face produced, the clypeus prolonged and the malar 

 space quite large ; face below antennae, labrum, and 

 mandibles bright chrome-yellow ; tbe yellow extends 

 upwards in the middle line, gradually narrowing, to the 

 middle ocellus ; laterally, along the orbital margins, it extends 

 about as far, but ends more bluntly ; cheeks entirely black ; 

 scape yellow, swollen ; flagellum light ferruginous beneath, 

 darker above ; mesothorax minutely but distinctly and rather 

 closely punctured; scutellum, postscutellum, collar, tubercles, 

 tegulse, and a band on each lateral margin of mesothorax bright 

 yellow ; area of metathorax with regular longitudinal basal 

 ridges, terminated by a transverse ridge, while at the sides a 

 curved ridge bounds a larger area. Wings clear hj^aline, 

 iridescent; stigma honey-colour with a narrow fuscous 

 margin ; nervures fuscous ; second s.m. very much broader 

 than high ; first r. n. joining apex of first s.m. ; abdomen 

 punctate. 



Hah. Sydnev, New South Wales, 1891 ( W. W. Froggatt, 

 28). 



Prosopis constrict a, sp. n. 



(J . — Length about 5 mm. 



Head and thorax black, dull, the vertex and meso- 

 thorax w ith close minute punctures ; abdomen w ith the 

 first two segments red, the rest dark fuscous, the fuscous 

 extending on to the apical part of the second segment. 

 Clypeus, labrum, and mandibles dull white, the white of 

 the clypeus notched or constricted just above the middle 

 by a black spot on each side ; no supraclypeal mark ; 

 lateral marks grey, extending very narrowly some distance 

 above the antennae; scape rather broad, whitish in 

 front ; flagellum thick, light ferruginous beneath, greyish 

 fuscous above, the last joint pointed ; sides of collar and 

 tubercles brownish white ; tegulse light brown with a white 

 spot; area of metathorax semicircular, bounded by a rim, 

 but not definitely ridged except in the middle, where there 

 is a strong longitudinal ridge, with a weak one on each 

 side of it. Wings hyaline and iridescent, nervures and 

 stigma fuscous; second s.m. comparatively short (narrow), 

 receiving the first r. n. a short distance from its base, and 

 the second at its extreme apex. Femora dark brown, the 

 anterior knees pallid ; anterior tibiae light amber-colour, 

 with a fuscous spot behind ; middle tibiee light in front and 

 dark behind, except at extreme apex and base; hind tibiae 



