8 



The above are based mainly upon my own study, supplemented 

 by those of Ricardo, Matsumura, Coquillett and others. It seems 



to me highly probable that further study will bring out new forms, 

 and make our knowledge on the distribution of our Tabanidae, much 

 more comprehensive that it has been attained hitherto. 



Table of the Japanese Genera of Tabaniiae. 



I. Hind tibiae with apical spurs; ocelli usually present 



Subfam. PANGONINAE. 



2. Second antennal joint almost as long as the first ; wings with 

 conspicuous black bands; frons of the female with a callus ... 



Chrysjps Meig. 



22. Second antennal joint distinctly shorter than the first ; wings 

 without black bands or markings. 



3. Third antennal joint with 8 annulations, of which the 

 first is broad and short, being not much longer than broad ; 



frons of the female without any tubercle or callus 



Corizoneura Rond. 



33. Third antennal joint with 5 annulations, of which the first 

 is very long and hardly broad ; frons of the female with 

 or without a callus Silvias Meig. 



II. Hind tibiae without any spurs; ocelli usually absent 



Subfam. TABANINAE. 



2. Third antennal joint dilated near its base and with a distinct 

 basal angle or process above, and with four subsequent an- 

 nulations. 



3. Basal process of third antennal joint short or obsolete at 

 most not reaching the end of the first annulation. 

 4. Eyes pubescent. 



5. Ocelligerous tubercle more or less distinct 



Therioplectes Zell. 



55* Ocelligerous tubercle absolutely absent 



