1937 ca. 500 p., numerous figures and plates, cloth (original front cover bound in). Schwedisch-chinesische wissenschaftliche Expedition nach den nordwestlichen Provinzen Chinas, unter Leitung von Sven Hedin und Sü Ping-Chang. Published in Arkiv för Zoologi.The first insecta volume with the introduction and 30 contributions, including: Acrididae (3 plates), Mantidae, Odonata (3 plates), Gryllidae, Blattidae, Tettigoniidae, Forficulidae, Bombyliidae, Asilidae, Tabanidae, Haliptidae, Scarabéides, Carabidae, Cicindelidae, Chrysomelidae, Diurna und Sphinges, Pyralidae, Pterophoridae, Tenthredinidae, Formicidae, Braconidae, Hemiptera aquatica, Plecoptera etc. etc. Very good copy.