novitates-zoologicae-additional-plates
Th(eodor) Pleske.
Wissenschaftliche Resultate der von N. M. Przewalski nach Central-Asien unternommenen reisen.
Zoologischer Theil. Band II. Vogel. Lieferung I.
Nauchnuie Rezul'tatui puteshestvii N. M. Przheval'skagho po tzentral'noi Azii.
St. Petersburg. 1889.
4 plates
Presumably, two additional plates may have been printed for this volume (XI--XII), but were not included with the publication and are otherwise rare.
Plate VII.
Plate VIII.
Plate IX.
Plate X.