In the 1880s, the Natural History Museum was in the process of moving its collections from the main British Museum site in Bloomsbury to their new building in South Kensington. During that time, Miers published his Catalogue of the stalk- and sessile-eyed Crustacea of New Zealand in 1876 and revised the Plagusiinae, Hippidae, Majidae, Squillidae and Idoteidae in monographs dated 1878–1881, based on the museum's collections. He also reported on the collections donated by the Admiralty from a number of voyages, including the survey of the coast of Japan by H.M.S. Sylvia (1870–1877), an expedition to view the Transit of Venus in Kerguelen and Rodrigues (1874–1875), a survey of the Galápagos Islands by H.M.S. Petrel, Novaya Zemlya by H.M.S. Isbjorn (1879), Baron Hermann-Maltzan's voyage to Gorée in 1881, and the voyages of H.M.S. Alert to Patagonia and the Strait of Magellan (1881–1882). The upheavals at his workplace and the quantity of work to be done may have taken their toll on Miers, and he was "completely prostrated with illness" for three months.[1]
Miers was still working on material from the Alert expedition, when six boxes containing the crabs from the Challenger expedition arrived, sent by John Murray. Describing these crabs would be Miers' largest taxonomic work, one which was published in 1886 as Report on the Brachyura collected by H. M. S. Challenger during the years 1873–1876 in 1886. Miers' honorarium for this work was £63 (60 guineas; equivalent to £8,700 in 2023).[1]
Miers tendered his resignation on 30 October 1885. The curation of the crustacean collection was handed to Jeffrey Bell, but Bell only published one paper on crustaceans, and the task of curation was soon shared with Reginald Innes Pocock. Miers lived to the age of 79, and died on 15 October 1930 at Burchetts Green, near Maidenhead, Berkshire.[1]