Subspecies and Distribution. O.c.curzoniaeHodgson,1858—S&EpartsofTibetanPlateau(China)andadjoiningNIndia(Sikkim);probablyalsoinextremeNNepal. O. c. melanostoma Buchner, 1890 — N & W parts of Tibetan Plateau, E to Mts adjoining Qinghai Lake (China). in Ochotonidae

Subspecies and Distribution. O.c.curzoniaeHodgson,1858—S&EpartsofTibetanPlateau(China)andadjoiningNIndia(Sikkim);probablyalsoinextremeNNepal. O. c. melanostoma Buchner, 1890 — N & W parts of Tibetan Plateau, E to Mts adjoining Qinghai Lake (China).Published as part of Don E. Wilson, Thomas E. Lacher, Jr & Russell A. Mittermeier, 2016, Ochotonidae, pp. 28-43 in Handbook of the Mammals of the World – Volume 6 Lagomorphs and Rodents I, Barcelona :Lynx Edicions on page 32, DOI: 10.5281/zenodo.661978