In the Journal of this Association for 1896 (Vol. IV., No. 2, p. 168) I published a few notes on the Pelagic Fauna of Plymouth for September, 1893 and 1895. This year (1897) I again occupied a table in the Laboratory during September for the study of medusae, and alos made a few entries in my notebook on the occurence of certain animals belonging to other groups, and kept a special look-out for the animals which I noted in previous years. Unfortunately I was not able to visit Plymouth during September in 1894 and 1896, consequently the record is broken by two blank years, and spoilt for an accurate comparison of one year with another, but it shows that more Atlantic forms were present in 1895 than in 1893 or 1897.