A nematode-capturing phycomycete with Pythium-like chlamydospores, that occurs abundantly in leaf mold and decaying roots in Virginia and Maryland, is described as Cystopage intercalaris. A zygospore stage of a nematode-capturing zoopagaceous fungus is described; it being possibly connected with C. intercalaris, though connection with 2 other forms preying on eelworms appears about equally probable. Description is given also of the zygospore stage of Cochlonema pumilum, a zoopogaceous endoparasite of the testaceous rhizopod Euglypha levis, C. ozotum is described as a branched endoparasite of the testaceous rhizopod Sphenoderia dentata in Virginia leaf mold. Sty-lopage minutula, likewise occurring in Virginia leaf mold, captures and consumes a small species of Amoeba. Acaulo-page dichotoma, which subsists similarly by capture of small amoebae, was found in decaying leaves of Nymphaea odorata and N. tuberosa collected in Wisconsin; the branched appendaged condition of its conidia indicating adaptation to a floating aquatic life. In considering the taxonomic position of Cystopage intercalaris, the literature on the rotifer-capturing phycomycete Zoophagus insidians is reviewed, the conclusion being drawn that the production of gemmae reported by Arnaudow as well as the declinous sexual development described by this author conform better with development in the Zoopagaceae than with development in the Pythiaceae.