Hirundo atrocaerulea Sundevall, Öfvers. K. Sv. Vet. Akad. Förhandl., vol. VII, No. 4, 17th. April 1850, p. 107.= Hirundo atrocaerulea Sundevall, 1850
Holotype ? : Male ad., Umvoti, Natal. 2. I. 1843. J. A. Wahlberg leg. No. 7101. - Measurements of type : wing : 112 mm.; tail : 136 mm.; culmen : 7,6 mm.; tarsus : 10 mm.Click on the picture for enlargement.