St. Petersburg, Kaiserliche Akademie der Wissenschaften, 1851. Two title pages (Zweiter Band. Theil 1 of the whole work, and Theil 1 of the zoology), 516 pp.; 32 lithographed plates. 20th-century green buckram. Spine with gilt ornamental bands and two (red and brown) morocco labels with gilt title. Red edges.

The complete invertebrate volume of the Reise in den äussersten Norden und Osten Sibiriens während der Jahre 1843 und 1844 mit allerhöchster Genehmigung auf Veranstaltung der kaiserlichen Akademie der Wissenschaften zu St. Petersburg ausgeführt und in Verbindung mit vielen Gelehrten herausgegeben von Dr. A. Th. v. Middendorff. The Mollusca part was written by the Russian explorer and malacologist Alexander Theodor Fedorovich von Middendorff (1815-1894). It comprises pp. 163-464, and plates 8-30, i.e., the vast majority of the text and plates, and is preceded by a chapter title. Shorter sections are devoted to worms, crustaceans, echinoderms and various insect groups including Coleoptera, Lepidoptera, Siphonaptera and Phthiraptera, the latter two collectively under "Parasiten". Two molluscan plates, and two insect plates are partly hand-coloured. The malacological part deals with marine, fresh water and land molluscs. Many species are new. Provenance: a stamp of the American malacologist Richard Irwin Johnson (1925-2020) in the top margin of the front free endpaper recto and second title page. A few, scattered spots; one plate and a few text leaves more spotted, but mainly in the margins. Rare. We found only a single auction record (from 1978) for this part of Von Middendorff's Reise. Nissen ZBI, 2813.