The little bivalve mollusc Galeomma turtoni is not very common of the coast of South Devon; but two specimens were brought in while we were working at the Marine Biological Laboratory last August, and when we examined them we found that the branchiæ and mantle cavity were aswarm with a small colourless ciliate.

While working at Plymouth in December, 1928, and in August, 1930, we noticed amœbæ in the intestine of Phallusia mamillata (Cuvier) which had been dredged in the Sound. The ten animals examined were all infected. The only previous record we can find of an amœba in such a situation is a short account given by Huxley (1920) of a small form occurring in large quantities in the stomach of Clavellina lepadiformis at Naples. The amœbæ we have seen are not like those from Clavellina and they seem to merit some description.