DIPTERA. 367 



cross-vein straight, almost upright, remote from the border : alula; colour- 

 less with yellow borders : halteres luteous. Length of the body Inline; 

 of the wings 3| lines. 



United States. 



Genus CCENOSIA, 3Ipigen. 



CCENOSIA TAKSALIS, FoBm. 



Nigra, cano-tomcntosa ; thorax fusco (rivittatus ; abdomen fusco vitlalum . 

 pedes fulvi, tarsis nigris ; alee suhlimpidm. 



Black, with a hoary covering ; frontalia deep black, broad, almost 

 linear; facialia without bristles ; epistoma hardly prominent: eyes bare : 

 moulh and palpi black : feelers black, with a hoary covering ; third joint 

 linear, slender, sliglftly tmncated at the tip, almost reaching the epistoma, 

 more than twice the length of the second ; fifth distinct, longer than the 

 fourth ; sixth minutely pubescent, stout towards the base, about twice the 

 length of the third : chest with three indistinct pale hroivn stripes : abdo- 

 men elliptical, a little longer than the chest, with a slender pale brown 

 stripe ; legs tawny ; feet black : wings almost colourless ; veins tawny, 

 black towards the tips; lower cross-vein almost upright, with two very in- 

 distinct curves, the lower outward, the upper inward : alula white with 

 yellow borders : halteres yellow. Length of the body 2j lines ; of the 

 wings 5 lines. 



Cape. 



CCENOSIA ANXICA, MaS. 



Nigra, cano-tomentosa ; caput antice album ; antenna picea; thorax 

 fusco trivittatns ; abdomen vilta dorsali maculisque qualuor fuscis ; 

 pedes fulvi, femoribus anticis tarsisc/ue nigris ; al<e. subiimpidtc. 



Black, with a hoary covering : head with a white covering in front ; 

 crown with a cinereous triangular spot ; frontalia deep black, slightly de- 

 creasing in breadth towards the feelers ; facialia without bristles ; epistoma 

 not prominent : eyes have : feelers pitchy ; third joint linear, truncated at 



