DTPTERA. 369 



not prominent : moulli and palpi black : feelers black, with a hoary cover- ' ^'^^'l^ 

 ing; third joint linear, obliquely truncated at the tip, nearly reaching the ^ ^ J^ 

 epistoma, full twice the length of the second ; sixth very slender, very ^ 



minutely pubescent, about twice the length of the third: chest with three 

 yelloivish brown stripes : abdomen obconical, with a cinereous covering, a 

 little longer and broader than the chest : Ict/s tawny ; thighs black, with 

 taivny tips ; posterior thighs taivny towards the base ; feet black : wings 

 almost colourless ; veins black, tawny towards the base ; lower cross-vein 

 very slightly oblique, almost straight: alulae white: halteres yellow. 

 Length of the body 1^ line ; of the wings 3 lines. 



United States. 



CCENOSIA ATRATA, Foem. 



Nigra, cano-tomentosa ; caput antice alburn ; thorax fusco trivittatus ; 

 pedes fulvi,femoribtis anticis tarsisque nigris, femoribus posterioribus 

 nigro cinctis ; aim sublimpidce. 



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

 frontalia black, broad, linear, with a hoary lanceolate stripe ; facialia with- 

 out bristles ; epistoma not prominent: eyes bare: mouth and palpi black: 

 feelers black ; third joint linear, obliquely truncated at the tip, reaching 

 the epistoma, more than twice the length of the second; sixth slender, 

 pubescent, bare at the tip, stout at the base, more than twice the length of 

 the third : chest with three pale brown stripes : abdomen elliptical, longer 

 and a little broader than the chest : legs taicny ; feet and fore-thighs black ; 

 hinder thighs uith a black band near the tip : wings almost colourless ; 

 veins tawny, black towards the tips ; lower cross-vein straight, almost up- 

 right : aluht" white : halteres yellow. Length of the body If line; of the 

 wings 3 lines. 



United States. 



CcENOSIA? INTACTA, FcCin. 



Flava ; antenna: basi fxisca ; thoracis discus niger ; abdomen fulvum, 

 apice subcinereum ; pedes fulvi ; alee sublimpidtc. 



Yellow : crown black, with a hoary covering ; frontalia pitchy, linear, 

 including on the back part a short lanceolate hoary stripe ; facialia without 



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