»2 



33. Thorax dull black without any stripes 



sakhalimnsis, Shir. (n. sp.) 



22. First joint of antennae slender, as long as the third joint, and 



thorax with indistinct stripes before the suture 



.formosana, Shir. (n. sp.) 



II. Hind femora at the base and apex black , 



rufipentiii, Bigot. ( ? ) 



I. Haematopota tristis, Bigot. (PI. II, fig. 7). 



(Gomafti-Abu.) 



Bull. Sec. Zool. France. XVI, p. 77, 1891 ; Mem. Soc. Zool. France, 



V, p. 628, 1892. 

 Matsumura, Thous. Ins. Japan, II, p. 72, pi. XXII, fig. 4, 1905 ; ;£ g 

 *'gis^#. %M, P- 68, PI. X, fig. 8, 1914. 



un%ffl0&m^m%fcm{tiz&m)&rtt, pi. vn, fi g . 8, i 9 i 4 . 



A common biting fly in northern Japan, easily recognised by 

 rather broad hyaline markings of wings and by rather distinct whitish 

 stripes on the thorax. 



Head broader than the broadest part of the thorax. Frons 

 occupying fully one-third the width of the head and very slightly 

 divergent below, yellowish grey with a large shining black callus right 

 across the lower quarter down to the furrow which separates the frons 

 from cheeks, this black callus being moderately convex with somewhat 

 double lunule upper margin which in the middle is somewhat angulate 

 above, and the callus extends downwads between the antennae, but on 

 that part almost always occupying by a rounded dull velvety black spot 

 aud the upper rims of the antennal pits are greyish orange ; there are 

 also two large rounded dull velvety black spots a little above the 

 shining black frontal callus which are separated from each other by 

 more than their own diameter but by less than half their diameter 



