DIPTEKA. 



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joint stout, very long ; sixth sliort, stout except at the tip : chest with four 

 Mack stripes : legs black : icings colourless ; veins black, lawny at the base ; 

 praebrachial vein forming a very obtuse angle at its flexure, beyond this it 

 is very slightly inclined inward, and ends on the tip of the wing, where 

 it approaches very near the cubital vein ; lower cross-vein straight: alulae 

 white : halteres tawny, with pitchy knobs. Length of the body H line ; of 

 the wings 3 lines. 

 United States. 



Tachina exul. Fern. 



Cancscens ; caput album ; abdomen cinereum ; antenn<B articulo So basi 

 fulvo ; pedes nigri ; alec albidce. 



Blade, icith a hoary covering : head with a %vhite covering ; fronlalia 

 whitish fawn-colour, slightly widening towards the feelers ; facialia without 

 bristles ; epistoma not prominent: mouth and palpi black : feelers pitchy ; 

 first and second joints extremely short; third tawny at the base, reaching 

 the epistoma, divided into tico parts, which are linear, rounded at the tips, 

 and of equal length; upper part bent upward; fourth joint very short; 

 fifth slightly bent, tawny at the base, full four times the length of the 

 fourth; sixth stout, lanceolate, much longer than the fifth: abdomen ob- 

 conical, cinereous, a little shorter and broader than the chest : legs black : 

 wings whitish ; veins tawny ; prtebrachial vein forming a very obtuse angle 

 at its flexure, hardly bent inward from thence to its tip, which ends at very 

 little in front of the tip of the wing ; lower cross-vein almost straight, 

 very remote from the border : halteres tawny. Length of the body 1 J line ; 

 of the wings 3^ lines. 



United States. 



Tachina insolita, Fem. 



Nigra; alee cinerea:, basiflava;. 



Black : head prominent and angular in front above the feelers, with a 

 white oblique stripe on each side ; frontalia striated ; facialia without 

 bristles; epistoma slightly prominent: eyes bare: palpi black, slender: 

 feelers black ; second joint tawny at the tip ; third full twice the length of 

 the second, straight above, slightly convex beneath, tawny above at the 



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