435 



from Java, as Miss Ricardo pointed out in the Record of Indian 

 Museum Vol. IV, p. 220. 



7. formosiensis is one of most rare species in Formosa, and at 

 the present time its occurence is quite restricted, as I have a record 

 only from Takao, from May to July iQth. ft is not known whether 

 this fly is a real biting species or not. 



VI. Isshikia, uen. 



Head wider than the thorax, rather short ; frontal stripe narrow, 

 with a long frontal callus and without ocelligerous tubercle; frontal 

 triangle not shining covered with tomentum ; face moderately convex, 

 with rather short pubescence ; eyes very inconspicuously pubescent, with 

 facets almost all equal and with a conspicuous though narrow shining 

 frontal margin where the facets el O; not appear. Antennae about as long 

 as the head; two basal joints short, and the second one with a rather 

 long process above the apical margin;-, the third long, composed of 

 distinct five annulations, the- basal annuiation with an unusually long 

 basal process which is quite the same as in the genus Diekoelacera but 

 not quite reaching the apex ; of the basal annuiation, and the style is 

 rather stout but very short (about 1 'half as long as the basal annuiation). 

 Proboscis powerful, produced, 'and bearing rather large sucker-flaps. 

 Palpi very conspicuous, two-jointed, with the apical joint cylindrical and 

 drooping to a point, lying on the' proboscis and mainly clothed with 

 small depressed bristles ; basal joint short ovate and bearing long 



pubescence. 





 Thorax moderate in size; quadrate with rounded angles ; hutneri 



distinct; praealar calli large, triangular. Pubescence fairly abundant 

 especially towards the sides ; pleurae conspicuously pubescent on the 

 upper hind part of the mesopleurae and on the prothorax, metapleurae 

 and pteropleurae, but there is no trace of bristles anywhere on the 

 pleurae though the praealar ealli bear conspicuous bristles -about the 

 lower margin. 



