BY ARTHUR WHITK. 211 



l'\iiiaJe resembles the male very closely, but the eyes 

 are more widely separated. 



This species may be easily recognised by its large size 

 and flattened shape, in conjunction with the diagnosis 

 given above. It is common, and generally distributed in 

 Tasmania, and seems to be distributed over the whole of 

 Eastern Australia. My only records are for February, but 

 no doubt the species remains on the wing throughout the 

 summer season. 



Anthrax velox, Sp. no v. 



A large species. Wings hyaline with foremargin brown, 

 the brown colour completely covering the bifurcation of the 

 radial and cubital veins; abdomen not flattened, the black 

 pubescence at sides cominencing on the second segment. 



Length. Female. 13 mm. 



Hab. Bagdad Valley. 



Femah. Face and lower fourth of front completely 

 covered v/ith short yellow pubescence, upper three-fourths 

 of front black, with short black, and a little short dark yel- 

 low, pubescence. Antennae black, with stiff black hairs at 

 base. Thorax dull brown, with long yellow-brown pube- 

 scence anteriorly, and laterally;, scutellum a little darker 

 than the thorax, with marginal yellow hairs. Abdomen 

 brownish-black, the dorsum bearing white and yellow 

 pubescence disposed in bands, that on the second, fourth, 

 and sixth segments being white, on the other segments 

 yellow, but all these pubescent bands become quickly de- 

 nuded ; sides of abdomen with long hairs, those on the 

 first segment pale yellow, on the second and third 

 yellow anieriorly, black posteriorly, on the fourth white 

 anteriorly, black posteriorly, on the fifth and sixth black; 

 apex with short yellow and long black pubescence. Legs 

 black, with short depressed ^^ellow 2>ubescence; pos- 

 terior femora and all tibire with short black bristles. 

 Wings hyaline, with the base and foremargin brown, the 

 brown colour completely covering the bifurcation of the 

 radial and cubital veins. 



Male. The only specimen of the male that I have seen 

 resembled the female described above ver}^ closely, but was 

 considerably smaller in size. 



The only other Tasmanian species with which A. velox can 

 be confused is A. marginata. From the latter species it 

 may be distinguished by the brown colouration of the 

 foremargin being broader, and completely covering the 

 bifurcation of the radial and cubital veins, also by the black 

 tuft-like lateral hairs on abdomen commencing on the sec- 



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