L. H.  Hyman, ?North American triclad Turbellaria. 16. Fresh-water planarians from the vicinity of Portland, Oregon?, American Museum Novitates, no. 2123, pp. 1-5, 1963.

L. H.  Hyman, ?Some land planarians of the United States and Europe, with remarks on nomenclature?, American Museum Novitates, no. 1667, pp. 1-21, 1954.

L. H.  Hyman, ?North American Triclad Turbellaria XI. New chiefly cavernicolous, Planarians?, The American Midland Naturalist Journal, vol. 34, pp. 475-484, 1945.

L. H.  Hyman, ?North American Triclad Turbellaria XIII. Three new Cave Planarians?, Proceedings of the United States National Museum, vol. 103, no. 3333, pp. 563-573, 1954.

L. H.  Hyman, ?Studies on the morphology, taxonomy, and distribution of North American triclad Turbellaria. VI. A new Dendrocoelid from Montana, Dendrocoelopsia vaginatus n. sp.?, Transactions of the American Microscopical Society , vol. 54, pp. 338-345, 1935.

L. H.  Hyman, ?Studies on the morphology, taxonomy, and distribution of North American Triclad Turbellaria. VII. The two species confused under the name Phagocata gracilis, the validity of the generic name Phagocata?, Transactions of the American Microscopical Society, vol. 56, pp. 298-310, 1937.

L. H.  Hyman, ?Some land planarians from Caribbean countries?, American Museum Novitates, no. 2110, pp. 1-25, 1962.

L. H.  Hyman, ?Endemic and exotic land planarians in the United States with a discussion of necessary changes of names in the Rhynchodemidae?, American Museum Novitates, vol. 1241, 1943.

L. H.  Hyman, ?Land Planarians from Yucatan?, Carnegie Institution of Washington publication, vol. 491, pp. 23-32, 1938.

L. H.  Hyman, ?New species of flatworms from North, Central, and South America?, Proceedings of the United States National Museum, vol. 86, no. 3055, pp. 419-439, 1939.

L. H.  Hyman, ?Studies on the morphology, taxonomy, and distribution of North American Triclad Turbellaria. VIII. Some cave planarians of the United States?, Transactions of the American Microscopical Society, vol. 56, no. 4, pp. 457-477, 1937.

L. H.  Hyman, ?North American triclad Turbellaria. IX. The priority of Dugesia Girard 1850 over Euplanaria Hesse 1897 with notes on American species of Dugesia?, Transactions of the American Microscopical Society, vol. 58, pp. 264-275, 1939.