SUMMARY: Two new species of and and a new species of are described. All three species were first isolated from the surface humus layer of tropical forest soils on the island of Trinidad, W.I. is distinguished from other species of the genus by its ability to form both stalkless and stalked migrating pseudoplasmodia. is a member of the crampon-based Dictyostelia. It differs from other members of this group in bearing lateral, sessile sori along the terminal half of the sorophore. is the second species in the genus to be described. It is distinguished from by its elliptical spores, pattern of aggregation and development, and smaller size.


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