whom he met at a Rothschild's soiree in 1910. The relationship was affected by his explorations abroad although a son and four daughters were born between 1910 and 1917. The son died in infancy. Iredale continued his work in natural history under the patronage of wealthy naturalists such as Charles Rothschild, for whom he travelled to Hungary to collect fleas from birds. He married Lilian Marguerite Medland (1880–1955) on 8 June 1923. She illustrated several of his books and became one of Australia's finest bird artists. New South Wales Iredale returned to Australia in 1923 and was elected a member of the Royal Australasian Ornithologists Union (RAOU) in the same year. He was a RAOU Councillor for New South Wales in 1926, and served on the RAOU Migration Committee 1925–1932. He took up a position as a conchologist at the Australian Museum in Sydney (1924–1944). Iredale was originally appointed to assist Joyce Allan, the temporary head of the Conchology department. However their positions were reversed in 1925. He worked tirelessly on publications on shells, birds, ecology and zoogeography. He lectured frequently and wrote many popular scientific articles in newspapers. Due to his efforts (and those of later curators), the Mollusc Section at the Australian Museum now maintains the largest research collection of molluscs in the Southern Hemisphere with over 6,000 specimens. He was an Honorary Associate from his retirement in 1944 until his death. Taxa Iredale recorded a list of around on thousand systematic names he had published by 1932, chronologically arranged and indexed to the relevant work, this unpublished list became the basis for the one produced for the Australian Museum and published in The Australian zoologist (1956). detailing the works of Iredale's fifty-year career. This list, produced as tribute to the still active author, brought the total number of names to over two and a half thousand, and noted his other publications and collaborators. Many species and several genera in conchology, ichthyology and ornithology were also named in honour of Iredale, including: The molluscan genus Iredalea W. Oliver, 1915 Cryptoplax iredalei E. Ashby, 1923 Iredale was made a Fellow of the Royal Zoological Society of New South Wales in 1931; was awarded the Clarke Medal of the Royal Society of New South Wales in 1959; and was President of the Royal Zoological Society of New South Wales in 1937–38. Selected works A selection of publications written by Iredale