Through the kindness of Dr. P. WAGENAAR HUMMELINCK the author was enabled to study a number of samples from localities in the tidal zone of several West Indian islands. Previously, by courtesy of Dr. T. MORTENSEN, abundant material from some deepwater samples collected off Santa Cruz, Virgin Islands, could be studied, the foraminifera dentata of which were described in 1956. The latter material mainly consisted of dredged samples from a depth of 500 fathoms (17.5°N and 64°W), and contained a typical deep-sea fauna. Comparison of MORTENSEN’s and HUMMELINCK’s samples shows marked differences; these may be of importance, as the deep-sea samples and the shallow-water samples are from the same Caribbean area.