194 HYMENOPTERA. 



fuscous, with a slight metalhc histre ; the first submarginal cell 

 has an abbreviated line emanating from the stigma, the base of 

 the second discoidal cell, and a larger irregular shape on the in- 

 ferior wings, fulvo-hy aline. Abdomen of a bright prismatic blue, 

 the apex thinly covered with long black hairs. 



Male. — Bears a close resemblance to the female; the antennae 

 porrect, entirely black ; the anterior wing has a line emanating 

 from the stigma, the anterior margin of the first submarginal 

 cell, the apex of the externo-medial cell, and the entire first dis- 

 coidal cell, obscure rufo- hyaline. 



Hab. Brazil (Santarem). (Coll. H.W. Bates.) 



17. Pepsis mutabilis. B.M. 



Pepsis mutabilis, St. Farg. Hym. iii. 483. 23. 

 Hab. Brazil. 



18. Pepsis nitida. 



Pepsis nitida, St. Farg, Hym. in. 176. 12. 

 Hab. Brazil (Minas Geraes). 



19. Pepsis purpurascens. B.M. 



Female. Length 9 lines. — Black, adorned with changeable 

 rich purple pile ; the antennae have the scape rufo-piceous in 

 front, the flagellum fuscous above, rufo-fulvous beneath, the first 

 and second joints fuscous beneath ; the labrum, mandibles in 

 the middle, and the palpi rufo-testaceous ; metathorax elongate, 

 transversely striate and channeled down the centre ; the sides of 

 the scutellum and base of the metathorax exhibiting in certain 

 lights a golden effulgence ; wings rufo-fuscous, their extreme 

 apex hyaline ; the legs have a rich purple iridescence, with a 

 golden reflection in certain lights. Abdomen subpetiolate, 

 bright purple, the apical margins of the segments obscurely rufo- 

 piceous. 



Hab. Brazil (Santarem). (Coll. H. W. Bates.) 



20. Pepsis seladonica. B.M. 



Pepsis seladonica, Dahlb. Hym. Europ. i. 120. 4 S . 

 Pepsis virescens, St. Farg. Hym. iii. 484. 24. 



Hab. Brazil. 



