ORIENTAL SPECIES OF TABANUS 281 



25. Abdomen and thorax lilac or blackish brown, femora blackish. 



Forehead about five times as long as it broad , . . rubidus. 



(Bengal ; Bombay ; 



Assam ; South India ; Malay Peninsula ; Java ; Sumatra ; closely allied to autum 



nalis and albimedius. 

 Abdomen and thorax obscurely reddish brown, femora reddish 



brown. Forehead five to six times as long as it is broad . . albimedius. 



(Widely distributed in India ; Nepal to Ceylon ; Bombay to Bengal.) 



26. Abdomen and thorax reddish brown, femora blackish. Fore- 



head about seven times as long as it is broad . . . speciosus. 



(South India ; Ceylon.) 



27. Median stripe of abdomen grey tomentose, or white or yellow- 



haired ............. 28 



Median stripe of abdomen black . . . . . . . . .31 



Median stripe of abdomen golden haired . . . . . . .32 



28. Forehead barely half as wide anteriorly as it is at vertex. .... 29 

 Forehead parallel or nearly so ......... 30 



29. Small brown species. Femora brownish . Wings clear, brown 



on fore border . . . hirtistriatus. 



(Federated Malay States.) 



30. Large black or reddish brown species, median abdominal 



stripe narrow. Femora black. Wings tinged brown . . monotaeniatus. 



(Assam.) 



Brown species, the median abdominal stripe broad, the two 

 round spots on second segment. Femora reddish wings 

 brown on fore border ........ brunnipennis. 



(Siam ; United Provinces ; India.) 



31. Abdomen reddish, black at apex, a narrow grey stripe often 



apparent on the median black stripe ..... abscondens. 



(Burma.) 



32. Forehead parallel 33 



Forehead narrower anteriorly .......... 34 



33. Abdomen yellowish brown, darker at apex, the median stripe 



a dull, golden hair indistinct ...... auristriatus. 



(Canara, India) 



34. Abdomen yellowish brown or dark brown, the median stripe 



broad. Fore femora yellowish. Wings brown, especially on 



fore border .......... hybridus. 



(Assam ; Malay ; Sarawak ; Borneo ; South China.) 

 Abdomen covered with yellowish tomentum, median stripe 



very broad. Fore femora black . Wings clear . . . aurotestaceus. 



(China.) 



35. Black species. Abdomen with ferruginous lateral stripes on 



the first four segments. Legs blackish brown . . tristus. 



(Sumatra.) 



36. Forehead narrowest anteriorly ......... 37 



Forehead narrowest at vertex .......... 38 



37. Small black species. Abdomen with a median grey stripe 



beginning on the third segment only, the lateral stripes 



terminate on the second segment ..... jucundus. 



(Punjab; N.-W. Provinces; Bombay; Ceylon; China.) 



38. Small brown species. Abdomen with a median grey stripe . puteus. 



(Ceylon.) 



36 



