LIST OF DIPTERA. 803 



ties : eyes pitchy ; feelers ferruginous, about half the length of the 

 face ; third joint linear, rounded at the tip, full twice the length of 

 the second ; bristle black, tawny towards the base, nearly thrice the 

 length of the third joint, rather stout for about one-sixth of its 

 length, very slender from thence to the tip : scutcheon tawny : ab- 

 domen obconical, purplish -blue, smooth, shining, a little shorter than 

 the chest : legs tawny ; feet black towards the tips ; foot-cushions 

 dull tawny : wings colourless, yellow at the base, on the fore borders 

 and along the borders of the veins ; tips brown ; middle cross-vein 

 slightly clouded with brown; wing-ribs and veins tawny; fourth 

 longitudinal vein almost straight, joining the border a little below 

 the tip of the wing ; lower cross-vein brown, slightly curved out- 

 ward ; scales yellowish. Length of the body 4 lines ; of the wings 

 10 lines. 

 a. Mosquito River, New Holland. Presented by the Earl of Derby 



Chromatomyia Vella, n. s. Ferruyinea, scutello fulvo, abdomine 

 purpureo-cyaneo, apice cyaneo-viridi, antennis pedibusque ferru- 

 gineis, femoribus posticis piceis, alls limpidis,fusco Irimaculatis, 

 basi costa venarumque marginibus Jlavis. 



Body ferruginous: head thickly clothed with short tawny hairs ; 

 face and mouth ferruginous ; palpi tawny, beset with black bristles : 

 eyes pitchy : feelers ferruginous, about half the length of the face; 

 third joint linear, rounded at the tip, full twice the length of the 

 second ; bristles black, tawny towards the base, nearly thrice the 

 length of the third joint; rather stout for about one-sixth of its 

 length, very slender from thence to the tip : scutcheons tawny : abdo- 

 men obconical, purplish blue, smooth, shining, a little shorter than 

 the chest, bluish green towards the tip: legs ferruginous, clothed 

 with short tawny hairs; claws black; hind thighs pitchy: wings 

 colourless, yellow at the base, on the fore borders, and along the 

 veins; fore borders adorned with three brown spots; the first large, 

 descending from the middle of the fore border into the disk ; the 

 second small, half-way between the first and the tip, which is clouded 

 with the third ; middle cross-vein slightly clouded with brown ; wing- 

 ribs and veins tawny ; veins pitchy towards the tips ; fourth longi- 

 tudinal vein almost straight, joining the border a little below the 

 tip of the wing ; lower cross-vein brown, slightly curved outward ; 

 scales yellowish. Length of the body 4 lines ; of the wings 10 

 lines. 

 a. Musquito River, New Holland. Presented by the Earl of Derby. 



