48 THE DIPTERA -BEACH YCERA OF TASMANIA, 



3. The four posterior cells arise from the discal cell ; colouring^ 



metallic. Subfam. Afltissinae. 



Scutellum armed. LECOGASxEii, Gen. uov. 



Scutellum unarmed or with rudimentary spines. 



Antissella, Gen. nov. 

 The fourth posterior vein is separated from the discal cell, 



and arises from the second basal cell, 4 



4. Antennae with a short terminal style. 



Subfam. Stratiomyinae. 



Basal joint of antennse never more than twice the length 

 of the second. O d o ntom yi a, Meig. 



Antennae with a long arista. Subfam. Sarg'inaB. 



Scutellum armed ; black species. 



Acanthasaegus, Gen. nov. 



Subfamily Berinae. 

 B E E I s, Latr. 



Seven species were chronicled by Macquart under the genus 

 Beris. Since that time the genus has been split up, and I 

 think it uniikelv that any of Macquart's species belong to 

 Beris in its restricted sense. Some difference of opinion 

 seems to exist as to the limits of these newer genera, but I 

 think that entomologists are fairly agreed as to the following 

 distinctions : — 



1. Three posterior veins, all arising from the discal cell. 2 



2. Eyes hairy, touching in the male. B E E i s. 

 Pour posterior veins, or vestiges of them, all arising 



from the discal cell. 3 



3. Eyes hairy, separated in both sexes. A c t i n a. 

 Eves bare, separated in both sexes. Neoexaireta. 

 The seven species described by Macquart are the following : 

 £eri'.s servillei. 



,, iiicisuralis. 



„ filipalpis. 



,, parvidentata. 



,, quinqiiecella. 



„ nitidithorox. 



„ fusciventf'is. 

 Of these species B. servillei belongs to +he genus 

 Neoexaireta (N. spinigera). It may be distinguished at once 

 by its banded wings. It is a common species in Victoria and 



