188 



HYMENOPTERA. 



the middle, forming small tubercles ; wings dark fuscous, with a 

 metallic-green iridescence. Abdomen smooth and shinino-, im- 

 punctate. 



Male. Length 6 lines. Differs in having the face, mandibles, 

 antennae, and anterior legs obscure ferruginous ; the thorax and 

 wings as in the other sex. 



Hab. West Africa (Whydah). 



22. MYGNIMIA INSIGNIS. B.M. 

 Female. Length 12 lines. Black : head pale ferruginous or 



yellowish-red, the prothorax, tegula? and legs of the same colour, 

 the latter slightly spinose, the posterior tibiae finely serrated ; 

 the metathorax truncate ; the wings deep fuscous, with a bril- 

 liant violet iridescence. Abdomen black, the apex ferruginous. 

 Hab. West Africa. 



This species is of precisely the same form as M. perplexa, 

 and both scarcely appear to belong to the genus ; but the only 

 difference, that of having the metathorax truncate and the ab- 

 domen sessile, is of frequent occurrence in the Pompilida. 



23. MYGNIMIA IMPERIALIS. BM. 

 Male. Length 14 lines. Black : the face below the insertion 



the antennae, the scape in front, the clypeus, labrum, palpi 

 and mandibles, ferruginous, the tips of the latter black. Thorax 

 above clothed with very short black velvety pubescence, the 

 metathorax having an elevated longitudinal carina down the 

 centre, the posterior lateral angles produced and forming obtuse 

 tubercles; very finely transversely striate; wings black, with a 

 rich purple iridescence, an obscure hyaline spot at the base of 

 the second discoidal cell ; the legs ferruginous, the intermediate 

 and posterior coxae, as well as the posterior femora above, fus- 

 cous; the abdomen covered with short black pubescence- the 

 base sli ghtly shining. 



Hab. West Africa. 



24. MYGNIMIA MEG^JRA. 



Male. Length 12 lines. Black : the clypeus rounded at its 

 anterior margin; the thorax clothed with short black pubescence 

 that on the metathorax is long and thinly scattered ; the meta- 

 thorax convex above, transversely striated and truncate behind, 

 the truncation smooth and shining ; wings black, having a bril- 



