88- 



sops makcuKvi, Pleskte (Ann. Mus, Zoo!. Acad. Imp. Sc. St.-Peters- 

 burg, XV. p. 469, pi. IV, fig. <S, 19 10), but it differs from the latter 

 in just a few points. I thought it may be a synonomy o makerozvi, 

 but I cannot determine this without seeing the type or species. 



According to Prof. S. Matsnmura the flics are common in Sak- 

 halin Island, but its economic importance among the species is not 

 known. 



8. Chrysops japonicus, Wiedemann. (PI. II, fig. 4 & 5.) 

 CKiiro-Mokiira-AJMO. 



Aussereurop. Zwcifi. Ins., I, p. 203, 1828. 



Walker, List Dipt. Frit. Mus., V, Suppl. I, p. 291, 1854. 

 Loew, Verh. Zool.-Bot. Ges. Wien, VIII, p. 621, 1858. 

 Osten-Sacken, Wien. Entom. Zeit^., Ill, p. 316, 1884. 

 Ricardo, Ann. Mag. Nat, Hist. (7), IX, pp. 428 & 430. 1902. 

 Kertesz, Cat. Dipt., Ill, p. 189, 1908, 



w^m^m^mwMm'^mki^MW})^^^ a viii,fi g . 9 , 1914. 



Matsumura, ^ B fc^M Q&&M, V- 7°, PL X, fig. 10, 1914. 

 Chrysops aterrimus, Kirby, Ann. Mag. Nat. Hist. (5), XIII, p. 457, 



1884. 



The large shining black species without any yellowish markings, 

 easily known by the triangular cross-band of the wings. 



Female. Head very slightly wider than the thorax. Frons flush 

 with the e3'es, very slightly divergent below, at its narrowish part 

 occupying much less than the one-third of the head, all black and 

 shining, depressed across the middle because the ocellar triangle above 

 and the large frontal callus below are conspicuously elevated ; the large 

 transverse frontal callus nearly touched the eye-margins leaving an 

 inconspicuous very fine dusted line, almost bare but its upper some- 

 what semicircular margin furnished with a few black hairs, the depressed 

 part very slightly obscured by a brownish black tomentum and incon- 

 spicuously punctulate, bearing a fairly abundant long black pubescence, 



