Referee's report by Julian Sorell Huxley, on a paper 'The form-transformation of the abdomen of the female pea-crab, Pinnotheres pisum Leach' by A E Needham to D C Martin, Assistant Secretary of the Royal Society Sectional committee: Zoology Recommended for publication in Proceedings. He cannot comment on the mathematical methods employed in the paper. The paper is of 'considerable interest and originality'. Modifications should be made. [Published in Proceedings of the Royal Society B, 1950]. Date received not given. 1949