igii.J G. RiCARDO: Revision of the species of Tahanus. 133 



grey tomentum and dense white pubescence. Breast with long 

 white pubescence. 



Abdomen black, type with only the two white-haired bands, 

 but on some of the other specimens narrow fringes of white hairs 

 appear on the fifth and sixth segments, the rest of the dorsum with 

 dense black pubescence, sides of first two segments with white 

 hairs, black on the others ; under side similar, but the second seg- 

 ment is covered with white pubescence. 



Legs black, tibiae white, but black at their apices, fore coxae 

 with some long white hairs, and tibiae with white pubescence, else- 

 where black, the femora with thick black fringes on each side. 

 Wings tinged brown on the fore border as far as the third vein, 

 less so on some specimens, veins and stigma brown, costal border 

 yellow. 



Tabanus sexcinctus, $ , n. sp. 



Type, a female from Lushai Hills, Burma (Capt. E. C. 

 Macleod), sent by Dr. Kertesz for identification. 



A species nearly allied to Tabanus bicmctus, n. sp., but distin- 

 guished by white bands on every abdominal segment except the 

 first, and the under side is almost entirely covered with white pubes- 

 cence. The wings are quite clear. The femora with grey tomen- 

 tum, and some white hairs which are long and numerous on the fore 

 pair, the thick black fringes not present. The palpi are more white 

 haired. The forehead is almost the same width throughout, and a 

 little broader, the frontal callus not reaching the eyes. The thorax 

 appears less black, with no anterior white-haired band, but with 

 some grey tomentum on the dorsum and black pubescence. Length 

 ir mm. 



Group III. 



Species with the callosities on forehead represented by two 

 small calli separated from each other, both about the same size, 

 usually round, small spots; distinguished by their Aiylottis-likQ 

 appearance {ftUvus group only) though the pubescence on eyes is 

 often practically non-existent. So far the only species in this group 

 from the Oriental Region are also common to the Palaearctic 

 Region, and are represented by the typical Tabanus ditaeniatus ^ 

 Macq., a South African species whose distribution is very wide, and 

 Tabanus fttlvus, Mg. (Atylotus). 



The identity of Tabanus agricola, Wied., recorded by Schiner as 

 occurring at Hongkong, seems very doubtful ; the species is not 

 included in the table. 



Tabanus fulvus, cf 9 {Alylotus), Meigen. 



Syst. Beschreib., ii, 61, 40 (1820) (see Kertesz Cat. Dipt, iii, 

 1908, for authorities). 



