352 Mr. E. E. Austen on neiv 



Rhhiomi/za concimia, sp. n. 



? . — Length (1 specimen) 12 mm. ; width of head 4 mm. ; 

 Midtli of front at vertex 0-6 mm. ; length of wing 12 mm. 



J)orsum of thorax cinnamon-coloured, yelluiuish-pullinose, 

 tvith a pair of ill-dejined, ochraceous-htiff, admedian, longi- 

 tudinal stripes, and a dark broivn, mediati, longitudinal strijie, 

 cumniencing just before level of transverse suture, very narrow 

 fur about 1 5 mm. and then suddenly expandinc} into an oblong 

 blotch reaching hind margin ; on each side of dorsum of thorax 

 an elongate dark hroivn mark, between humeral callus and base 

 of icing ; dorsum of abdomen orange-buff, darker towards 

 distal extremity, last three segments mainly chestnut-brown, 

 first segment with a narrow clove-brown band of nearly uniform 

 depth on hind border, second segment icith an irregular clove- 

 brown triangle on hind border, each lateral extremity of which 

 is connected ivith one of a pair of clove-brown transverse 

 blotches, ofie of which is situated on each side of third segment ; 

 ivings not quite hyaline (faintly tinged ivith sepia), ivith con- 

 spicuous mummy-browu markings. 



Head buff-vellow (occipital region smoke-grey), frontal 

 callus ochraceous, shining central portion of face tawniy- 

 ochraceous, ocellar spot and a quadrate median spot immedi- 

 ately above lower margin of face clove-brown ; under surface of 

 head clothed with ochraceous hair ; palpi tawny, terminal joint 

 clothed on outer side with minute, appressed, Llack hairs ; 

 antenna tawuy-ochraceous, first and second joints clothed 

 with minute blackish hairs, upper angle of second joint much 

 produced, third joint long and slender, darker towards distal 

 extremity aud end of last annulus brown, but (in typical 

 specimen at any rate) no sharply defined clove-brown or 

 black tip to third joint, upper branch of third joint much as 

 in Rh. denticornis, Wied., not remarkably elongate, and only 

 about half the length of upper branch in case of foregoing 

 species. Thorax : dorsum clothed with short buff-yellow 

 hair (on lateral dark brown marks with brown hair) ; pleurae 

 buff pollinose, clothed with yellowish- white hair ; pectus 

 dark broivn, grey pollinose. Abdomen (dorsal surface) : first 

 segment clothed with ochre-yellow hair, second and following 

 segments cloth d for most part with minute, appressed, 

 blackish hairs, sides of second segment also with ochre- 

 yellow hair ; clove-brown band on first segment somewhat 

 narrower at each side, apex of triangle on second segment 

 reaching to about the middle, clove-brown blotches on third 

 segment somewhat triangular in shape (at any rate in typical 

 specimen), base of each triangle resiing on lateral margin of 



