One new genus, Antrosagittifera, and four new species of interstitial acoel
flatworms from Bermuda are described, bringing the total number of known a
coels from Bermuda to eight. The new species are Haploposthia vandula, Para
haploposthia velvetum, Antrosagittiferta corallina, and Proporus bermudensi
s. A previously described species, Pseudaphanostoma opisthorchis is reassig
ned to the genus Haploposthia.