Buceros nasutus var. orientalis Sundevall, Öfvers. K. Sv. Vet. Akad. Förhandl., vol. VII, No. 5, 8th. May 1850, p. 130.= Tockus nasutus nasutus Linnaeus, 1766
Holotype ? : Male ad., Sennar Province, Anglo-Egyptian Sudan. 1837. J. Hedenborg leg. No. 3834. - Measurements of type : wing : 233 mm.; tail : 225 mm.; culmen : 115 mm.; tarsus : 37 mm.Click on the picture for enlargement.