72 REVISION OF THE STRATIOMYID.E OF AUSTRALIA, 



T(djlt of tilt AnstraJian >S-iil)J'ain'tlies of Sfrafionit/idn-. 

 l.Abdi)men with seven, visible segments; scutellai- spines, if 

 present, four ov mute in mxnil)cr; winj^s with either tluee 



or four, posterior veins BEKiNi*;. 



Abdomen with only five or six, visible segments 2. 



2. Wings with four, posterior veins or traces of them 3. 



Wings witii only three, posterior veins 6. 



8.Tlie four, posterior veins all arise from the discal cell 4. 



The fourth, pcjsterior vein is separated from tlie discal cell, and 



arises from the second, basal cell 5. 



4. Metallic species; scutellar spines, if present, four oi' more in 



number AntissiNj^. 



Non-metallic species; scutellar spines two in number Clitellarin.!-:. 



5. Antennfe with or without a short style, never with an arista 



Stratiom YIN^,. 



Antennas with a long, thread-like arista Sargin^-. 



6. Antennae with a long, thread-like arista Pachygastrin^:. 



In dividing the genei'a of Stratiomyidcc into their respective 

 subfamilies, some doubt may occasionally occur relative to the 

 position of the posterior veins, because, in a few genera, the 

 fourth posterior vein seems to arise from the exact junction of 

 the discal cell and the second basal cell, and so might be con- 

 sidered to arise from either. In such cases, the relationship 

 seems to be nearest to the Clitellarince, and such genera are 

 usually considered as belonging to that subfamily, whilst onlj' 

 those in which the fourth posterior vein is distinctly separated 

 from the discal cell, are placed in the Stratiomyin(e or Saryince. 



Subfamily BERIN.'E. 



The species belonging to this subfamily are readily recognised 



by their narrow abdomen, with seven, visible segments; the 



scutellar spines, if present, are never less than four in number. 



The lierinte occur all over Europe, North and South America, 



Australia and New Zealand. In all, about a dozen genera have 



been described. In .Australia, five genera aie known to occur. 



Talilc of Ihf AnMralian Genera of Berime. 

 l.Scutellum without spines 2. 



Scutellum with spines 3. 



2. Wings with three, posterior veins Cryptoberis, gen.nov. 



Wings with four, posterior veins METOroxiA ilacq. 



