Plate on the page 347 Fig 1-2 <i>Lagomys roylei</i> = <i>Ochotona cansus</i>; Fig. 3 <i>Ochotona koslowi</i> in winter plumage
<bdi><a href="https://en.wikipedia.org/wiki/en:Gustav_M%C3%BCtzel" class="extiw" title="w:en:Gustav Mützel"><span title="German artist (1839-1893)">Gustav Mützel</span></a>
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<a rel="nofollow" class="external text" href="https://archive.org/details/nauchnyerezulyt1impe/page/n5/mode/2up">Nauchnye rezulʹtaty puteshestvīĭ N.M. Przhevalʹskago po T͡Sentralʹnoĭ Azīi, izdannye Imperatorskoi͡u akademīei͡u nauk. Tom I. Mammalia, written by Evgenij A. Büchner</a>