To a lesser extent, Ellis published papers about other land invertebrates and various aspects of the fauna and flora of Britain.
From 1919 to 1961 he contributed specimens of spermatophytes to a number of different herbariums in Britain.
[2] Stella Turk, the British naturalist said about Ellis, "It is difficult to categorise people.
"; she also commented, "As might have been expected, he wrote his own obituary in which he gives a broad outline of his life and very lengthy bibliography", (J. Conch.
Ellis published several books which were the standard reference texts for identifying the non-marine Mollusca of Great Britain and Ireland during most of the 20th century: Publications on non-marine mollusca and obituaries of conchologists: Conchological Society; Papers for Students Publications in the Conchologists' Newsletter: