292 LIST OF DIPTERA. 



bristles ; hips black ; thighs with a white bloom, paler than the 

 shanks ; feet piceous ; wings gray, with a dark tawny tinge along 

 two-thirds of the fore borders ; wing-ribs and veins piceous, tbe 

 latter black towards the tips ; poisers tawny, with bright yellow tips. 

 Length of the body 5 lines ; of the wings 12 lines. 



a. Swan River. Presented by Sir J. Richardson. 



Bombylius immutatus, n. s., mas. Niger, pilis flams vestitus, an- 

 tennis femoribusque nigris, tibiis ferrugineis, tarsis piceis, alis 

 limpidis basi costaque fulvis. 



Body black, with a gray bloom, most thickly covered with pale 

 yellow hairs : there are a few black hairs on the crown of the head, 

 which is covered with more and longer black hairs about the base of 

 the feelers ; the latter are black ; the third joint slightly tapers from 

 the base to the tip, and is rather shorter than the first and the 

 second : mouth black, as long as the chest : palpi also black, and 

 more than one-third of the length of the mouth : eyes dark red, with 

 a bronze tinge : legs ferruginous, with a few black bristles which 

 are mostly on the shanks ; hips and thighs, excepting the tips of the 

 latter, black and covered with a hoary bloom ; feet hairy, piceous : 

 wings colourless, tawny at the base and on the fore borders for two- 

 thirds of the length ; wing-ribs and veins tawny, the latter black to- 

 wards the tips ; poisers tawny, their knobs mostly piceous. Length 

 of the body 4 lines ; of the wings 10 lines. 



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



Bombylius mystax, Wied. Zool. Mag. ii. 42. Dipt. Exot. i. 171, 



20. Auss. Ziveif. i. 346, 25. 

 a. Cape. 



Bombylius primogenitus, n. s., mas. Niger, pilis fer rug ineis vesti- 

 tus, capite pilis albis fulvis nigrisque ornato, antennis nigris, 

 pedibus fulvis, femoribus basi nigris, tarsis piceis, alis subcine- 

 reis basi et ad costam fuscis. 



Body black : head rather broad, clothed with tawny hairs be- 

 hind, with black hairs on the crown, and with white hairs on the 

 front and beneath : eyes red : mouth rather shorter than the chest : 

 feelers black; second joint not one-third of the length of the first ; 

 third joint very slightly tapering from the base to tip, longer than 

 the first and the second : chest and breast clothed with bright ferru- 

 ginous hairs : breast clothed with hoary hairs : abdomen clothed 

 with black hairs at the tip : legs tawny and clothed with short taw- 

 ny bristles ; thighs towards the base and hips black, clothed with 

 long white hairs ; feet piceous towards the tips : wings pale gray, 



