BY ARTHUR WHITE. 207 



The species belonging to this genus may usually be found 

 settled on the ground in hot, sunny places, in which situa- 

 tions several of the species are abundant. 



Table of the Tasmanian Species of Anthrax. 



1. WingSi with at least one half brown. 2 

 Wings hyaline, or at most with the foremargin 



brown. 3 



2. Wings cut sharply in a nearly straighl line into a 



deep brown basal hall and a hyaline apical half. 



Incisa, Macq. 

 Wings with the base and costal half suffused with 

 brown, which melts gradually into the hyaline 

 portion without any distinct lina of demarca- 

 tion ; abdomen with twO' white bands. 



Alter NANS, Macq. 



3. Wings completely hyaline ; pubescence at sides of 



thorax yellowish-white ; small species. Minor, Macq. 



Wings practically hyaline, but a little darkened 

 along the course of the clcsely adjacent media- 

 stinal and subcostal veins; pubescence at sides 

 of thorax fulvous ; small to middle-sized species. 



NiGRTcosTA, Macq. 



Wings hyaline, with the base and foremargin dis- 

 tinctly brown. 4 



4. Large species (usually about 12 mm ). 5 

 Small species (5 to 8 mm.). 6 



5. The 1irown colouration of the foremargin never de- 



scends so far as the bifurcation of the radial 

 and cubital veins, which is always clear; the 

 black pubescence on sides of abdomen is confined 

 to the third and subsequent segments, that on 

 the second segment being pale yellow. 



Marginata, Walk. 

 The brown colouration of the foremargin covers the 

 bifurcation of the radial and cubital veins; the 

 black pubescence on sides of abdomen com- 

 mences on the second segment. Velox, Sp. nov. 



6. Pubescence at base of abdomen yellowish-white; 



wings rather dull. Simplex, Macq. 



Pubescence at base of abdomen silvery-white ; 

 wings brightlv glistening. Argentipennis, Sp. nov. 



Anthrax incisa, Macq. 



This species was originally described by Macquart from 

 Tasmania. T have not met with it personally, but there 



