LIST OF DIPTERA. 271 



hips and thighs black ; shanks and feet tawny, with piceous tips : 

 wings narrow, gray, dark tawny at the base, brown along the fore 

 border for near two-thirds of their length ; this brown stripe slightly 

 widens towards its tip, where it terminates rather abruptly, but very 

 irregularly, being interrupted by gray intervals ; twelve brown spots 

 occupy the veins on the gray part of the wing ; six of these are on 

 the cross-veins, and five along the hind borders ; there are several 

 pale brown stripes on the disks of the areolets, and two large irregu- 

 lar brown blotches ; wing-ribs and veins black ; poisers tawny, with 

 a large piceous spot on the upper-side of the knob. Length of the 

 body 3 lines ; of the wings 10 lines. 

 a. West Australia. From Mr. Clifton's collection. 



Anthrax decedens, n. s. Nigro-fusca capite nigro, thorace vittis 

 quinque pallidis, lateribus seutelloque ferrugineis, abdomine sub- 

 tus fulvo, pedibus ferrugineis, alis cinereo-fuscis ferrugineo va- 

 riis, apice albis. 



Body dark brown, much broader and less linear than that 

 of any of the preceding species : head black, hoary behind, beset 

 with black bristles between the eyes, and thickly clothed in front 

 with tawny hairs : chest clothed with tawny hairs, having three pale 

 very indistinct stripes on the disk, and a more decided white stripe 

 on each side ; sides and scutcheon ferruginous ; breast hoary : ab- 

 domen clothed with tawny hairs which form a tuft on each side at 

 the base, and the latter has also a slender band of yellowish white 

 hairs ; under-side tawny : legs dark ferruginous ; thighs clothed 

 with tawny hairs ; shanks and feet clothed with black hairs : wings 

 grayish brown, white at the tips, with a ferruginous tinge at 

 the base and along the fore borders ; wing-ribs and veins dark fer- 

 ruginous, the latter piceous towards the tips ; poisers tawny. 

 Length of the body 7 lines ; of the wings 20 lines. 



a. West Australia. From Mr. Clifton's collection. 



Anthrax tendens, n. s., mas. Ferruginea, thoracis dorso nigro, ab- 

 domine rufo fasciis nigris, antennis nigris, pedibus rufis, alis 

 limpidis fusco bifasciatis. 



Head thickly clothed in front with yellow hairs : feelers and 

 sucker black, the former ferruginous at the base : eyes dark red : 

 chest black, clothed with tawny hairs ; sides and breast ferruginous, 

 the latter slightly covered with a hoary bloom ; scutcheon also fer- 

 ruginous : abdomen red, clothed with yellowish white hairs at the 

 base and on each side, and having a slender irregular black band 

 on each segment of the back : legs red or tawny, beset with black 

 hairs and bristles : wings long, brown, with two irregular colourless 



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