Lagopus rupestris var. occidentalis Sundevall, Öfvers. K. Sv. Vet. Akad. Förhandl., vol. 31, No. 3, 11th. March 1874, p. 20.= Lagopus mutus rupestris J. F. Gmelin, 1789
Holotype ? : Male ad., Greenland, 62°30' N. Lat. 11. X. 1870. A. E. Nordenskiöld leg. No. 15771. - Measurements of type : Wing : 190 mm.; tail : 125 mm.; bill from nasal opening : 9,5 mm.; tarsus : 35 mm.Click on the picture for enlargement.