MEGALOPTA. 49 



apex green. The head with fine confluent punctures ; the clypeus 

 shining, blackish, and with strong punctures ; the mandibles with 

 the apical half rufo-piceous ; the flagellum fulvous beneath. Thorax 

 closely punctured, with the disk shining and with distant punc- 

 tures ; the metathorax smooth and shining, with a transverse en- 

 closed space at its base, with strong short radiating striae ; wings 

 hyaline, iridescent, and slightly clouded at their apex, the nervures 

 rufo -fuscous, the tegulae rufo-testaceous ; legs obscurely rufo-piceous 

 and with fulvous pubescence. Abdomen ovate, finely and sparingly 

 punctured ; the apical margins of the two basal segments with a 

 narrow fringe of fulvous pubescence, on the following segments 

 the fringe is paler and not so even. 



Hah. Brazil, Para. 



5. Megalopta cuprifrons. 



Female. Length 4 lines. — Head and thorax green, the face of a 

 coppery brilliancy ; the mesothorax above obscure ; the scutellum 

 and postscutellum bright green ; abdomen obscure dark olive and 

 opaque. The head and thorax above with fine confluent punctures ; 

 the clypeus very bright and with strong punctures ; the antennas 

 black ; the wings hyaline, with a dark fuscous stain on the an- 

 terior margin of the front wings ; legs black, but obscurely rufo- 

 piceous beneath, their pubescence black. The basal segment of the 

 abdomen strongly punctured, the following segments with short 

 pubescence, pale, and changeable in different lights. 



Male. Coloured as the female, but of a more slender form ; the legs 

 rufo-piceous, the abdomen elongate-ovate, with the two basal seg- 

 ments strongly punctured. 



Hab. St. Paulo, Amazons. 



6. Megalopta ornata. 



Female. Length 5 lines. — Green; the head and thorax strongly 

 punctured, the punctures confluent; abdomen dark green, with 

 tints of blue in certain lights. Head with the hinder margin of 

 the vertex acute ; the clypeus convex and of a bright coppery red ; 

 the face on each side golden yellow ; the antennae black ; head 

 beneath golden green. Thorax with the collar produced laterally 

 into an angulated thin curved process ; the disk of the mesothorax 

 rugose, the base of the metathorax concave, smooth, and shining, 

 but having a few shallow longitudinal striae ; wings hyaline, their 

 apical margins with a fuscous cloud ; the nervures fuscous, the 

 tegulae black, smooth, and shining ; legs black, with tints of green 

 on the tibiae, their pubescence fuscous above ; the floccus on the 

 posterior femora beneath pale fulvous, as well as that on the tibiae 

 beneath ; on the first joint of the tarsi beneath it is bright fulvous. 

 Abdomen smooth and shining, the basal segment punctured late- 



E 



