HYMENOPTERA. 



187 



cenee ; the metathorax truncate posteriorly, convex above and 

 transversely striate. Abdomen clothed with a changeable iri- 

 descent pile. 

 Hab. South Africa. (Coll. Dr. A. Smith.) 



19. Mygnimia Tisiphone. B.M. 



Female. Length 17 lines. — Black, smooth and shining: the 

 clypeus widely emarginate in front; the wings dark brown, 

 beautifully iridescent, partaking of shades of blue, purple and 

 green; the metathorax opake, transversely striated, finely in 

 centre and coarsely so at the sides, posteriorly truncate, the 

 truncation opake ; the tibise obscm-ely rufo-piceous beneath. 

 Abdomen very smooth and shining, delicately and distantly 

 punctured, the apical segment and also the apical margins of the 

 segments beneath, rufo-piceous ; beneath, the segments are 

 more strongly and closely punctured than above. 



Hab. South Africa. 



20. Mygnimia spectrum. B.M. 



Female. Length 7-10 lines. — Rufo-testaceous : the eyes and 

 tips of the mandibles fuscous ; the post-scutellum and margins of 

 the metathorax more or less fuscous, the latter transversely 

 striated above and rounded behind ; wings dark fuscous, with a 

 brilhant iridescence partaking of shades of purple, violet and 

 blue ; the apical margins of the segments of the abdomen and a 

 central longitudinal stripe rufo-fuscous. 



Male.— Resembles the female in general colouring, but having 

 the meso- and meta-thorax black, or fuscous ; the sides of the 

 thorax parallel, the metathorax truncate posteriorly and thinly 

 covered with cinereous pubescence ; the tegulse and basal portion 

 of the costal nerve rufo-testaceous. 



This species resembles the Pompilus glabratus of King, but 

 the neuration of the wings is entirely different. 



Hab. Gambia; Interior of S. Africa. (Coll. Lord Derby.) 



21. Mygnimia sabulosa. B.M. 



Female. Length 10 lines.— Black : without pubescence, or 

 having only a few black hairs on the clypeus, anterior coxae and 

 the apex of the abdomen ; the mandibles obscurely rufo-piceous; 

 the flagellum fulvous beneath, brightest towards the apex ; tips 

 of the joints of the palpi ferruginous; the metathorax rounded 

 behind, transversely striate, and having on each side posteriorly 

 a minute tubercle ; the scutellum and post-scutellum elevated in 



