3:33 



MUSCA CONCOLOU. 



^>4i .^ 



Cinerea; caput flavo-album ; ihoraxniyroquadriviUatus; abdomen nigra 

 tesselhitum ; antenna' piceee, basi ferruijinea; ; pedes niyri : alee sub- 

 limpidce, basi subfulifc, ad costam subfuscce. 



Cinereous: head yelloivish lohite in front and i«je«</t, white behind, 

 clothed beneath with white hairs; iVoutalia bhick or hoary according to 

 the direction in which they are viewed, broad, linear, inclosing a short ci- 

 nereous stripe ; epistoma prominent : mouth black, shining ; palpi tawny : 

 feelers pitchy ; first and second joints dark f err uyinous ; third rather deep, 

 almost truncated at tlie tip, more than twice the length of the second, not 

 reaching the epistoma ; lifth distinct; sixth stout towards the base, fea- 

 thered with long hairs, not much longer than the third : chest with four 

 interrupted black stripes : abdomen tessellated with black, obconical, not 

 longer than the chest : legs black ; thighs and shanks with a cinereous 

 covering ; knees tawny : loings almost colourless, with a tavmy tinge at the 

 base, pale brown along part of the fore border; veins black, tawny towards 

 the base ; prabrachial vein slightly cwvcd ; lower cross-vein witli three 

 very slight curves, the middle one inward, much longer than the other 

 two which are outward : alulae white : halteres pale luteous. Length of 

 the body 2| lines ; of the wings 5^ lines. 



South America. 



MuSCA DIVISA. 



.-.,.. .s<- '{:( n^^ 



Aureo-viridis ; caput flavum ; abdomen fulvum, nigro vittatum ,- antcnme 

 hiteee; pedes nigri, tibiis ferrugineis ; ahe snbcinerea>. 



Fern. Head pale yellow, with a silky white covering, clothed beneath 

 and behind with white hairs ; /ron<a/ia yellow, linear; facialia without 

 bristles; epistoma prominent: eyes bare : proboscis black ; palpi luteous : 

 feelers luteous ; third joint almost spindle-shaped, not nearly reaching the 

 epistoma, full twice the length of the second ; sixth feathered with short 

 hairs, black and merely pubescent towards the tip, full twice the length of 

 the third : chest golden green, with a white covering : abdomen taumy, u-ith 

 an irregular interrupted black stripe : legs black ; shanks ferruginous .- 



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