................ .Atylotns Ost-Sack. 



44. Eyes bare ; ocelligerous tubercle absent , 



. , . . Tabanus Zell. (s. s.) 



33. Basal process of third antennal joint unusually long, at 



least reaching over the first annulation 



hshikia Shir. (n. g.) 



22. Third antennal joint dilated near its base, ; but without any 

 process or angle, and with three subsequent annulations . . 

 Haeinatopota Meig. 



Subfam. PANGONINAE. 



Ocelli often present, and the ocellar tubercle usually present. 

 Proboscis sometimes porrect and. then sometimes exceedingly long 

 (^PanganM, Diatomineura and Dorcalaenius}. Eyes in life, brilliant 

 liquid green, and in Cltrysops with purple spots or markings ; upper and 

 anterior facets often enlarged. Antennae varying from an absence 

 of a dorsal process near the base of the third joint to that process 

 being exaggerated into a long curved spine-like one (Ditrania and 

 Lichelacera^. 



Wings very varying in venation, as the first posterior cell is 

 often closed and sometimes even a long distance before the wingmargin 

 (but in our fauna never closed), while the fourth posterior cell is 

 sometimes contracted ; small cross-vein sometimes almost absent, though 

 it is always present in Japanese species. 



Legs with apical spurs on the hind (as well as the middle) 

 tibiae, touch-hairs usually indistinct, but sometimes dense and almost 

 brushlike. 



Abdomen varying from somewhat tapery to very stout and 

 rounded ; often, with conspicuous yellow markings. 



Up to the present time we know of only three genera and ten 



species in Japan, including Formosa and Sakhalin. The Japanese 



spe.cies of this subfamily are usually attracted by flowers, but the 



