48 AXDRENID-E. 



MEGALOPTA, Smith. 



1. Megalopta purpurata. 



Male. Length 6 lines. — Purple, brightest on the abdomen, and 

 covered with thin short pale pubescence, which is most dense on the 

 thorax beneath and on the sides of the metathorax. Head closely 

 and finely punctured ; the clypeus shining and with scattered 

 punctures ; the mandibles rufo-piceous ; the nagellum of the an- 

 tennas obscurely fulvous beneath. Thorax with minute shallow 

 punctures above ; wings fulvo-hyaline, the nervures rufo-testaceous ; 

 the metathorax smooth and shining ; the legs rufo-piceous, with 

 the tarsi pale rufo-testaceous. Abdomen oblong-ovate, delicately 

 punctured at the base, beneath rufo-piceous. 



Hah. Amazons, Ega. 



2. Megalopta nigro-femorata. 



Female. Length 4J lines. — Pale ferruginous, with the head, meso- 

 thorax above, and the pectus more or less brassy green. The 

 anterior margin of the clypeus, the labrum, and mandibles pale 

 ferruginous, the latter black at their tips ; the antennas ferruginous. 

 The wings fulvo-hyaline, the nervures and tegulae pale ferruginous : 

 the legs ferruginous, with the apex of the intermediate tibiae, the 

 posterior tibiae, and the basal joint of the intermediate and posterior 

 tarsi black, and with black pubescence. Abdomen subglobose, the 

 apical margins of the second, third, and the following segments 

 slightly rufo-fuscous. 



Hal. Ega. 



3. Megalopta pilosa. 



Female. Length 4 lines. — Brassy green, and covered with short 

 fulvous pubescence. The clypeus naked, shining, and strongly 

 punctured ; the labrum pale ferruginous ; the mandibles ferruginous, 

 with their tips rufo-piceous ; the scape and one or two of the basal 

 joints of the nagellum pale ferruginous, the rest of the joints black. 

 The base of the metathorax with longitudinal striae ; the wings 

 hyaline, the nervures and stigma pale testaceous ; a fuscous cloud 

 in the marginal cell, passing beyond to the apex of the wing ; legs 

 pale ferruginous, with fulvous pubescence. The basal segment of 

 the abdomen strongly punctured. 



Hah. St. Paulo, Amazons. 



4. Megalopta vivax. 



Female. Length 31 lines. — Head and thorax blue-green, the vertex 

 and disk of the thorax obscurelv so ; abdomen brownish black, the 



