ORIENTAL SPECIES OF TABANUS 287 



yellow. Palpi stout, ending in a long fine point. Frontal 



callus yellowish, often indistinct . . ... . flaviventris. 



(Bengal ; Assam ; Ceylon.) 

 Reddish brown species. Frontal callus reddish brown, always 



distinct 81 



81. Thorax and scutellum blackish. Palpi slender, long. Anten- 



nae black at tip. Legs black, tibiae reddish yellow . . diversifrons. 



(Bengal ; Sylhet, Assam.) 

 Thorax and scutellum usually reddish. Palpi stouter. 



Antennae not black at tip . . . . . . . . . .82 



82. Abdomen reddish brown, unicolourous. Legs reddish yellow, 



femora often darker subcinerascens. 



(Burma.) 



Abdomen marked with grey tomentum, giving it the appear- 

 ance of having zigzag indistinct bands. Legs blackish, 

 tibiae yellowish obeonicus. 



(Bengal.) 



83. Subcallus not bare, shining or tuberculous ....... 84 



Subcallus bare, shining tuberculous. ........ 88 



84. Palpi stout. Femora black or reddish brown ....... 85 



Palpi slender. Femora yellowish ......... 87 



85. Forehead two-thirds narrower anteriorly than at vertex. 



Abdomen yellow anteriorly rather transparent. Legs 



yellowish, fore legs darker ....... borniensis. 



(Sarawak.) 

 Forehead one-third narrower anteriorly than at vertex. 



Reddish brown or reddish yellow species ....... 86 



86. Abdomen reddish brown. Thorax blackish. Legs black, 



tibiae yellowish wings clear or slightly tinged . . . fuscicauda. 



(Ceylon ; Sumatra.) 



Thorax reddish yellow, almost same colour as abdomen. 

 Legs yellowish fore femora darker. Wings tinged yellow 



on fore border uniformis. 



(Malay.) 



87. Abdomen dusky reddish brown or reddish yellow. Forehead 



about a third narrower anteriorly than at vertex, frontal 



callus pear-shaped ....... subhirtus. 



(Bengal ; Bombay ; Java.) 

 Abdomen olive coloured. Forehead about half as narrow 



anteriorly as it is broad at vertex, frontal callus very narrow, formosiensis. 



(Formosa.) 



88. Medium-sized species. Abdomen yellowish with darker apex. 



Palpi yellow. Legs reddish yellow, the fore tarsi darker. 



Forehead seven times as long as it is broad. . . . tuberculatus. 



(Bengal ; Assam.) 



89. Small species. Legs black tibiae white. Eyes with cross 



bands 90 



90. Reddish brown or yellowish species. Beard white or yellow. 



Palpi usually pale. Forehead ten times as long as it is 



broad simplissimus. 



(Malay ; Sumatra ; Java.) 



