IQII.] G. RiCARDO : Revision of the species of Tabanus. 123 



Forehead hardly narrower anterior- 

 ly^, but parallel . . . . 61. 



60. Frontal callus large, reaching the 



eyes. Antennae, legs, and palpi 

 wholly black. Wings clear or 



tinged smok}- brown . . nicobarensis , Schiner. 



Frontal callus narrow. Antennae 

 and legs blackish. Palpi yellow. 

 Wings brownish . . . . justorius, Rondani. 



61. Frontal callus narrow, not reaching 



eyes. Antennae and legs black. 

 Palpi black, paler on insides. 

 Wings faintly tinged brown . , khasiensis^ n. sp. 



62. Brown or black species with whitish 



bands and spots on abdomen . . 63. 



Reddish yellow species with whitish 



bands and spots on abdomen . . 64. 



63. Abdomen reddish brown or blackish 



brown wdth broad white bands 

 and large triangular median spots. 

 Palpi short and stout . . sanguineus, Wlk. 



Smaller species. Abdomen black 

 with narrow white-haired seg- 

 mentations and small triangular 

 spots. Palpi slender . . oxyccratus, Bigot. 



64. Abdomen reddish yellow, darker at 



apex, with narrow yellowish white 



segmentations and median spots. 



Legs black, tibiae yellowish . . orientis, Wlk. 



Abdomen similar, but the last four 



segments are black . . . . ftdvimeditis, Wlk. 



Smaller species. Abdomen similar 



to that of orientis. Legs wholly 



yellow . . . . . . consanguinetis , Macq. 



Group X. 



Black or brown species. Forehead 



narrower anteriorly, seven to ten 



times as long as it is broad . . 66, 



Large reddish yellow species from 



20-24 i^in- ill length. Forehead 



six to ten times as long as it is 



broad . . . . • . 72- 



Dark reddish 1:)rown species from 



18-22 mm, in length. Forehead 



seven to ten times as long as it is 



broad . . . , . . 75. 



Reddish or reddish yellow species 



