PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM SMITHSONIAN INSTITUTION U. S. NATIONAL MUSEUM Vol. 100 Washington: 1949 No. 3255 OBSERVATIONS ON FLATWORMS AND NEMERTEANS COLLECTED AT BEAUFORT, N. C. By A, S. Pearse During the summer of 1946, from May 23 to August 27, I studied tlie consortes of marine animals collected at Beaufort, N. C. This paper discusses the findings for turbellarians, trematodes, and nemer-teans. The cestodes and nematodes will be worked up and presented later; those that deal with parasitic crustaceans have already been published (Pearse, 1947). Three turbellarians, 32 trematodes, and 2 nemerteans that were found on or in marine animals at Beaufort, N. C, are here listed, and eight new species of trematodes and one new genus are described. The species of hosts that were found to be infested with parasites were 1 king crab, 3 decapod crustaceans, 2 clams, 1 turtle, and 28 fishes. Twenty-two species of fishes harbored one species of trematode, five had two, and one had three. Thanks are due to L. B. Hayes, David Busby, and Glen E. Mathisen, who helped with routine examinations. All animals were dissected and studied under a binocular microscope. Any consortes found were preserved and mounted in dammar. Dr. E. W. Price looked over the manuscript of this paper and made many constructive suggestions in regard to the Monogenea. My heart}' thanks are tendered to him. Phylum PLATYHELMINTHES Class TURBELLARIA Order Tricladida BDELLOURA CANDIDA (Girard) On June 27 four specimens of Limulus polyphemus Linnaeus (2 males and 2 females) were brought into the laboratory; they carried, 834975—49 25
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