282 PROCEEDINGS OF THE ACADEMY OF [1897. 



Pepsis pretiosa Dhlb. 



Three specimens. Chapada (April). 

 Pepsis venusta Sin. 



Chapada (March, April, June, August, October, December) ; 

 Corumba (April) ; Mararu (April) ; Santarem. Twenty-seven spec- 

 imens. 



Pepsis Pertyi Luc. 



Chapada (April). One specimen. 

 Pepsis helvolicornis Luc. 



Santarem. One example. 

 Pepsis xanthocera Dhlb. 



One example. Rio de Janeiro (November). 

 Pepsis fulgidipennis Mocs. 



Chapada (March, April, September) ; Santarem. Fifteen female 

 specimens. 



Pepsis violaceipennis Mocs. 



Rio de Janeiro (November) ; Chapada (December) ; Santarem ; 

 Mararu. Six specimens. 



Pepsis crassicornis Mocs. 



Fourteen specimens. Chapada (February, March, April). 



Pepsis chlorotica Mocs. 



Rio de Janeiro (November). One example. Lucas doubtfully 

 refers this species to his group P. ianthina, hymencea, elevata, etc., 

 in which action he is probably correct, although the wings have a 

 brighter sheen than the species of that group. 



Pepsis mystioa Luc. 



One specimen. Rio de Janeiro (November). 



Pepsis sagana Mocs. 



Two examples. Chapada (March) ; Rio de Janeiro (November). 



Pepsis advena Mocs. 



Chapada and Corumba in April ; Rio de Janeiro (November). 

 This species belongs in the group with two preceding ones. 



Pepsis smaragdinula Luc. 



Twelve specimens ( 9 $ ). Rio de Janeiro (October, November) ; 

 Chapada (January, March, April). 



