DIPTERA. 309 



epistoma slightly prominent : eyes bare : palpijLaivny : feelers tawny ; tliird 

 joint short, more shallow towards the tip, about half the length of the face, 

 a little more than iwice the length of the second; sixth stout, feathered 

 to the tip with long hairs, twice the length of the third : chest with a dull 

 pale fawn-colour covering, and with four black stripes, the outer pair broader 

 than the inner pair : scutcheon and abdomen dull testaceous with pale re- 

 flections : abdomen obcumca], a little longer than the chest, with a black 

 stripe which tapers from the base to the tip : wings gray, brown beneath the 

 fore border and along the veins ; praebrachial vein forming a hardly acute 

 angle at its flexure which emits a short branch, bent inward a little beyond 

 this, and almost straight from thence to its tip; lower cross-vein with the 

 two curves which are distinct: alula; dingy vvhite with pale yellow borders. 

 Leugth of the body 4 lines ; of the wings 9 lines. 

 Brazil. 



Dexia notata. 



Cana ; thorax nigra bivittatus, scutello subferrugineo ; abdotnen cine- 

 reum ; antenna nigrie, basi ferruginete ; pedes nigri, longi ; alee 

 cinerecB. 



Hoary : head clothed behind and beneath with white hairs, red about 

 the face ; frontalia pitch}', almost linear: mouth black, shining, ferrugi- 

 nous at the tip : feelers black ; first and second joints ferruginous ; sixth 

 clothed with short black hairs : chest with ttvo very broad black stripes, each 

 of which includes an indistinct pale brown streak : scutcheon with a ferru- 

 ginous covering : abdomen cinereous : legs long, black, slender; thighs with 

 a hoary tinge : tvings gray ; veins black, tawny at the base and along the 

 fore border ; cross-veins bordered ivith dark broivn ; prcebrachial vein fonn- 

 ing a right angle at its flexure, curved inward near this, almost straight 

 from thence to the tip which joins the cubitiil vein ; lower cross-vein with 

 three curves, the first and the third slight and inward, the middle one deep 

 and outward : alulae white with pale yellow borders : halteres pale red. 

 Length of the body 2f lines ; of the wings 5\ lines. 



New South Wales. 



