254 LIST OF DIPTERA. 



them ; legs black, beset with black hairs and bristles : wings pale 

 gray, blackish brown at the base, and for three-fourths of the length 

 along the fore border, and for one-fourth of the length along the 

 hind border ; the outline of the dark part is irregular, and there is 

 a spot on its outskirts ; the gray part contains three dark spots on 

 as many cross-veins ; wing- ribs and veins black ; poisers tawny, 

 with a piceous spot on the knob. Length of the body 3i lines ; of 

 the wings 10 lines. 



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



Anthrax semimacula, n. s., fem. Nigra, abdominis segmentis fulvo 

 fasciatis, pedibus piceis, alis fuscis cinereo maculatis et vittatis, 

 apice subcinereis fusco bimaculatis. 



Body black : head clothed with black and yellow hairs : eyes 

 dark red : mouth piceous : feelers black : chest clothed with long 

 black hairs, and having a fringe of tawny hairs along the fore bor- 

 der : abdomen also clothed with long black hairs, and adorned with 

 a small patch of white hairs on each side of the base ; hind borders 

 of the segments tawny : legs piceous, thinly clothed with black 

 hairs : wings brown at the base, and along the fore border for full 

 two-thirds of their length ; this colour includes a few gray spots and 

 stripes, its outline is very irregular and oblique, and in one part is 

 dilated into a nearly separate spot ; the rest of the wing including 

 most of the hind border is slightly gray, with the exception of two 

 brown spots on the disk ; veins black ; poisers tawny. Length of 

 the body 3| lines ; of the wings 10 lines. 



a. New Holland. Presented by the Haslar Hospital. 



Anthrax bimacula, n. s., fem. Nigra, pilis albis etnigris varia, 

 pedibus nigris, alis fuscis, apice oblique limpidis, fusco macu- 

 latis et vittatis. 



Body black : head clothed with black hairs : eyes dark red : 

 feelers and mouth black : chest, breast and abdomen clothed with 

 black and white hairs : abdomen overspread with a gray bloom, and 

 having on each side a thick patch of white hairs at the base and 

 another near the tip ; the latter hairs are dilated towards their tips : 

 legs black, beset with black hairs and bristles ; feet clothed beneath 

 with tawny down : wings dark brown from the middle to the base ; 

 the line between this hue and the colourless part is irregular and 

 oblique ; there are two brown spots on each wing, one on the dark 

 part, the other on a cross-vein nearer the tip, and beneath there is 

 a narrow brown line along another cross-vein ; veins black ; poisers 



