Lancelot Alexander Borradaile (26 September 1872 – 20 October 1945) was an English zoologist, noted for his work on crustaceans and his books The Invertebrata and Manual of Elementary Zoology.
He published an important monograph On the Pontoniinae in 1917, based on material collected by the 1905 Percy Sladen Trust Expedition to the Indian Ocean, led by John Stanley Gardiner.
[1] He studied at Selwyn College, University of Cambridge, on the natural sciences tripos.
[5] In 1895, he began demonstrating in zoology at Cambridge, and also starting investigating variation in crustaceans, under William Bateson.
[1] In 1899, he accompanied John Stanley Gardiner on an expedition to Ceylon (Sri Lanka) and Minikoi (Minicoy),[1] where he studied various aspects of crustacean biology, especially the terrestrial crabs.