The Oceanic beds of Naparima, in Trinidad, contain numerous forms of Foraminifera of great interest, and I propose to make some observations on a few of them These rocks and their contents were described by me in the Journal of the Geological Society of London, 1892 (vol. Xlvii, p. 519). Messrs. Jukes-Browne and Harrison treated of the same subject in the same journal in 1899 (vol. lv, p. 177), and I have given further particulars in the Proceedings of the Zoological Society, 1894 (p. 647), in the Proceedings of the Trinidad Field-Naturalists Club, 1893, and in the GEOLOGICAL MAGAZINE, 1900, p. 322. A few further observations are published in the Proceedings of the Victoria Institue.