of Fossorial Hymenoptera. 257 



trochanters black ; wings dark fuscous and with a purple 

 iridescence in certain lights. Abdomen subsessile, obscurely 

 blue, and with a fine obscure purple pile or bloom. 

 Hah. India (Bombay Presidency). 



This species, together with M. perplexa of India and M. 

 insignis of Africa, belong to a section having the abdomen 

 sessile or subsessile. 



Mygnimia lata. 



Female. Length 7-8^ lines. Black ; head, thorax anteriorly, 

 legs, and abdomen, except its base, reddish yellow ; wings dark 

 fuscous, with a purple and violet iridescence. Antennae pale 

 ferruginous. Thorax : the pro- and mesothorax above reddish 

 yellow, the latter more or less black at its anterior margin ; 

 the tegulse ferruginous ; the metathorax truncate, and trans- 

 versely and irregularly striated; the coxas and trochanters 

 black, with their apex ferruginous. Abdomen smooth and 

 shining ; the basal segment black with a blue tinge. 



Hah. Birmah. 



Mygnimia intermedia. 



Female. Length 16 lines. Black; the head, pro- and meso- 

 thorax, and the legs, except the coxae, trochanters, and base 

 of the femora, reddish yellow. The antennas yellow ; tips of 

 the mandibles black. The anterior margin of the pro- and 

 mesothorax more or less blackish ; the metathorax black, 

 truncate posteriorly, and transversely striated ; the wings flavo- 

 hyaline. Abdomen smooth and shining. 



Hah. N. India; Ceylon. 



The Sphex flava of Fabricius very closely resembles this 

 species, which occasionally has the apical segment more or 

 less yellow, but its metathorax is always black ; the wings 

 have their apical margins only occasionally very narrowly 

 bordered with fuscous : the 8. flavus (Pompilus flavus of the 

 1 Sy sterna Piezatorum ') has the thorax reddish yellow, except 

 the pectus, which is black ; and the species is smaller, varying 

 from ten to twelve lines. 



Mygnimia vitripennis. 

 Female. Length 14 lines. Black ; the antennas obscurely 

 ferruginous beneath ; the clypeus with scattered fine punctures, 

 and its anterior margin slightly emarginate ; the cheeks and 

 the sides of the thorax with short thin black pubescence ; the 

 metathorax obliquely rounded, the sides margined, trans- 

 versely striated, most strongly so at the lateral margins ; the ■ 

 wings dark brown, and having a brilliant lustre of coppery 



