igii.] G. RiCARDO : Revision of the species of Tabanus. 169 



Head wholly white and white haired, frontal callus narrows 

 oblong, ovate, continued in a black line. Eyes naked, not banded. 

 Palpi white. Antennae reddish, at apex more or less widely black, 

 the third joint at base with distinct tooth. Thorax with three 

 wdde stripes (anterior half divided by a narrow ash)^ grey line) in 

 middle with very short black hairs, at sides with yellow hairs. 

 Abdomen black with three grey or white rows or spots, the middle 

 spot triangular as in Tahanus autuuinalis, rather wider at apex ; 

 under side grey with middle stripe brown less conspicuous, each 

 segment at apex narrowly margined with yellow. Squamae dark. 

 Halteres white, at base black. Len 

 Soc. Entom. Ross., xxi, 180 (1887). 



5 . The abdomen is blackish marked as in the male, with grey 

 tomentose triangular median distinct spots and with lateral less 

 distinctly defined ones, the segmentations ver^- narrowly lighter. 

 Thorax similar. Tibiae all yellowish with apices black. Palpi 

 reddish j^ellow, long ending in an acute point, wdth black pubes- 

 cence. Antennae with black pubescence on first two joints, third 

 long rather slender with obtuse tooth. Forehead narrow, ver)' 

 sHghtly narrower anteriorly, about seven times as long as it is 

 broad, covered with yellowish brown tomentum and some scattered 

 pubescence. Frontal callus oblong, not touching ej^es, reddish 

 brown or brown with a short spindle-shaped extension. Length of 

 specimens from 15 — 18 mm. 



Three females from Wei Hai Wei have the first posterior cell 

 not closed but very much narrowed at the border, but are in all 

 respects similar, with the exception of the greater size of the lateral 

 spots W'hich take up nearly the whole width of the segments. 



cf . The colour of the abdomen is yellowish l^rown or darker 

 brow^n, the lateral white tomentose spots often yellowish, ill defined, 

 the second segment sometimes almost wholly yellowish brown wit)i 

 three grey spots ; the median triangular grey spots always well 

 marked. Thorax dark with grey tomentum and stripes, these last 

 often with short scattered yellowish pubescence. The fore tibiae 

 are usually red-yellow as well as the others, but sometimes ob- 

 scurely so, and ahvays on only the basal half. 



Head large, the facets sharply divided, the small ones reach- 

 ing half-way up the frontal triangle anteriorly and continued pos- 

 teriorly as a narrow band to the ocelligerous tubercle. Length 

 from 15 — 18 mm. 



The Macquart type came from China (on tlu- label is '-China 

 boreal"); the Walker type from Hongkong; the Portschinsky type 

 from Chinese MongoHa ; and Schiner's type from Hongkong. In 

 Bull. Ent. France, 1887, p. Ixxvii, Tabcinus aniaenus is recorded 

 from near Yeso, N. Japan, by Bigot. 



In Brit. .Mus. coll. are specimens from Foo Chow and Swatow. 

 and Shanghai (Walker); Formosa; and Japan (Dr. Myajima, 1909). 

 In the Kertesz coll. along series of males and females from Formosa. 



The species probably belongs to the northern part of the 

 Oriental Region and the southern ])art of the Pahearctic Region. 



