genus Tabanus> but blackened in a few species from Formosa ; in 

 Haeniatopola however the wings are rather darkened and bear nume- 

 rous hyaline irregular shaped spots which tend to form incomplete 

 ocelli. Venation simple, but varying as the first posterior cell is widely 

 open or contracting, or closed and sometimes even a short distance 

 before the wing-margin ; while the anal cell is usually closed with a 

 rather long petiole ; the upper branch of the cubital fork without or 

 with the recurrent veinlet. 



Legs without any apical spurs on the hind tibiae, though there 

 are two unequal spurs on the middle tibiae. Touch-hairs almost always 

 present beneath the front tarsi, and often also beneath the end portion 

 of the front tibiae. 



Abdomen usually brownish grey or blackish, with from one to 

 three rows of light grey dorsal spots or flecks, or yellowish large 

 lateral spots, or yellowish segmentations. 



The only fully recognised character, separating the Tabaninae 

 from the Pangoninae, lies in the absence of apical spurs to the hind 

 tibiae. 



The females of this subfamily are all blood-suckers, but the 

 males may be found sitting on tree-trunks, posts or rails, while some 

 of them hover in bright sunshine, especially in the early morning. 



We have five genera and fourty-nine species, in which one 

 genus and 1 1 species are new from the systematic point of view. 



IV. Haematopota, Meigen. 



Illiger's Magazine, II, p. 267, 1803. 



Chrysozona, Meigen, Nouvelle Class., p. 23, 1800. 



Small-sized moderately hairy flies of greyish black or greyish 

 brown colour broken up by lighter grey markings and of elongate 

 shape, with peculiarly mottled wings. 



Head quite transverse, much broader than the thorax. Frons 

 of the male reduced to a triangle above the antennae as the eyes 



