In 1858, Sclater published a paper in the Proceedings of the Linnean Society, setting up six zoological regions which he called the Palaearctic, Aethiopian, Indian, Australasian, Nearctic and Neotropical. These zoogeographic regions are still in use. He also developed the theory ofLemuria during 1864 to explain zoological coincidences relating Madagascar to India. In 1874 he became private secretary to his brother George Sclater-Booth, MP. He was offered a permanent position in civil service but he declined. In 1875, he became President of the Biological Section of the British Association for the Advancement of Science, which he joined in 1847 as a member. Sclater was the founder and editor of The Ibis, the journal of the British Ornithologists' Union. He was Secretary of the Zoological Society of London from 1860 to 1902. He was briefly succeeded by his son, before the Council of the Society made a long-term appointment. In 1901 he described the okapi to western scientists although he never saw one alive. His office at 11 Hanover Square became a meeting place for all naturalists in London. Travellers and residents shared notes with him and he corresponded with thousands. His collection of birds grew to nine thousand and these he transferred to the British Museum in 1886. At around the same time the museum was augmented by the collections of Gould, Salvin and Godman, Hume, and others to become the largest in the world. Among Sclater's more important books were Exotic Ornithology and Nomenclator Avium, both with Osbert Salvin; Argentine Ornithology, with W.H. Hudson; and The Book of Antelopes with Oldfield Thomas. In June 1901 he received an honorary doctorate of Science from the University of Oxford.
Family
On 16 October 1862 he married Jane Anne Eliza Hunter Blair; the couple had 1 daughter and 4 sons. Their eldest son, William Lutley Sclater, was also an ornithologist. Their third son, Captain Guy Lutley Sclater, died on 26 November 1914, aged 45, in the accidental explosion that sank HMS Bulwark. Philip Sclater is buried in Odiham Cemetery.
Animals named after Sclater
Sclater's lemur
Dusky-billed parrotlet.
Sclater's monal
Erect-crested penguin
Ecuadorian cacique.
Mexican chickadee
Bay-vented cotinga
Sclater's antwren
Sclater's cassowary ... now usually considered con-specific with the Dwarf Cassowary.
Colombian longtail snake
Although eclipsed by his contemporaries, Sclater may be considered as a precursor of biogeography and even pattern cladistics. For instance he writes in 1858 that "...little or no attention is given to the fact that two or more of these given geographical divisions may have much closer relations to each other than to any third...".