ADDENDA. 319 



Page 92. 

 Sargus stamineus. 

 a. Santarem, Brazil. From Mr. Bates' collection. 



Page 94. 



Sakgus melleus. 



Sargus melleus, Rondani, Ditteri Brasiliana, 1848. 

 Brazil. 



Sargus opulentus. 



Mas. Viridis, cyaneo purpureoque varius ; caput antice fus- 

 cescens, subtus testaceum ; antenna fuscai^ basi testacece ; ab- 

 domen purpureum, segmento 2o testaceo ; pedes albido testacei, 

 femoribus posticis nigricantibus, tibiis posticis apice metatar- 

 sisque posticis basi pallide fuscis ; alcefuscce. 



Male. Head brownish in front, testaceous beneath. Antennae 

 brown, testaceous towards the base ; arista black, slender, extremely 

 long. Thorax bright green, partly blue and purple, brownish tes- 

 taceous on each side and beneath. Abdomen purple, slightly 

 widening from the base of the second segment to the tip ; second 

 segment testaceous, purple above at the tip and on each side. Legs 

 whitish testaceous; hind femora blackish, pale at the base ; hiud 

 tibiae at the tips and hind tarsi at the base pale brown ; tips of the 

 latter brown. Wings brown, grayish at the tips and on the disks 

 of the posterior areolets; veins black. Halteres testaceous, with 

 apple-green tips. Length of the body 6 lines ; of the wings 12 

 lines. 



a. Para. From Mr. Bates' collection. 



Sakgus contractus. 



Mas. Aureo-viridis ; caput antice fulvum ; antenna fuscce, basi 

 fulvce ; abdomen cupreum, segmentorum marginibus posticis 

 fulvis ; pedes fulvi, femoribus tibiisque posticis nigris ; alee 

 cinerea. 



Male. Head tawny in front. Proboscis pale testaceous. An- 

 tennae brown, tawny at the base ; arista black, slender, short. Thorax 



