43 AXnUKNID.'K. 



MEGALOPTA, Smith. 



1 . Megalopta purpurata. 



Mdh. Lcnidh linos. — I'lupli", briglitcst on tho abdomen, and 

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

 tliorax beneath and on tho sides of the motathorax. Head closely 

 and tinely punctured ; the clypous shining and with scattered 

 jmnctures ; tho mandibles rufo-piceous ; the flagollura of the an- 

 tenna' obscurely fulvous beneath. Thorax with minute shallow 

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

 tho metathorax smooth and shining ; the logs rufo-pieenus, with 

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

 punctured at the base, beneath rufo-piceous. 



Jfdh. Amazons, Ega. 



2. Megalopta nigro-femorata. 



Female. Length 4^ 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 antennae ferruginous. 

 The wings fulvo-hyaline, the nervures and tegulse pale ferruginous ; 

 the legs ferruginous, with the apex of the intermediate tibise, tho 

 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 rnfo-fuscous. 



Hah. 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 flagellum pale ferruginous, the rest of the joints black. 

 The base of the metathorax with longitudinal stria) ; the wings 

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

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

 pale ferruginous, with fulvous pubescence. The basal segment of 

 the abdomen strongly jDunctured. 



Hab. St. Paulo, Amazons. 



4. Megalopta vivax. 



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

 and disk of tho thorax obscurelv so : abdomen lirownish black, tho 



