1933. The generic names Cephalobellus Cobb, 1920 and Scarabanema Christie, 1931 (Nematoda). Journ. Washington Acad. Sci., vol. 23, P. 358.

Christie, J. R., and Crossman, L.

1933. On the dissemination of a diplogasterid. Journ. Parasitol., vol. 20, pp. 69-70.

Clausen, C. P.

1940. Entomophagous insects. 688 pp. New York.

Cleveland, L. R.

1925. Toxicity of oxygen for protozoa in vivo and in vitro: Animals defaunated without injury. Biol. Bull., vol. 48, pp. 455-468.

1927. Natural and experimental ingestion of Paramoecium by cockroaches. Science, vol. 66, p. 222.

1930. The symbiosis between the wood-feeding roach, Cryptocercus punctulatus Scudder, and its intestinal flagellates. Anat. Rec., vol. 47, pp. 293-294. (Abstract.)

1931. The effects of molting on the protozoa of Cryptocercus. Anat. Rec., vol. 51, Suppl., p. 84. (Abstract.)

1947. Sex produced in the protozoa of Cryptocercus by molting. Science, vol. 105, pp. 16-17.

1947a. The origin and evolution of meiosis. Science, vol. 105, pp. 287-289.

1948. An ideal partnership. Sci. Month., vol. 67, pp. 173-177.

1949. Hormone-induced sexual cycles of flagellates. I. Gametogenesis, fertilization, and meiosis in Trichonympha. Journ. Morph., vol. 85, pp. 197-296.

1950. Hormone-induced sexual cycles of flagellates. II. Gametogenesis, fertilization, and one-division meiosis in Oxymonas. Journ. Morph., vol. 86, pp. 185-214.

1950a. Hormone-induced sexual cycles of flagellates. III. Gametogenesis, fertilization, and one-division meiosis in Saccinobaculus. Journ. Morph., vol. 86, pp. 215-228.

1950b. Hormone-induced sexual cycles of flagellates. IV. Meiosis after syngamy and before nuclear fusion in Notila. Journ. Morph., vol. 87, pp. 317-348.

1950c. Hormone-induced sexual cycles of flagellates. V. Fertilization in Eucomonympha. Journ. Morph., vol. 87, pp. 349-368.

1951. Hormone-induced sexual cycles of flagellates. VI. Gametogenesis, fertilization, meiosis, oöcysts, and gametocysts in Leptospironympha. Journ. Morph., vol. 88, pp. 199-244.

1951a. Hormone-induced sexual cycles of flagellates. VII. One-division meiosis and autogamy without cell division in Urinympha. Journ. Morph., vol. 88, pp. 385-440.

1952. Hormone-induced sexual cycles of flagellates. VIII. Meiosis in Rhynchonympha in one cytoplasmic and two nuclear divisions followed by autogamy. Journ. Morph., vol. 91, pp. 269-323.

1953. Hormone-induced sexual cycles of flagellates. IX. Haploid gametogenesis and fertilization in Barbulanympha. Journ. Morph., vol. 93, pp. 371-403.

1954. Hormone-induced sexual cycles of flagellates. X. Autogamy and endomitosis in Barbulanympha resulting from interruption of haploid gametogenesis. Journ. Morph., vol. 95, pp. 189-211.

1954a. Hormone-induced sexual cycles of flagellates. XI. Reorganization in the zygote of Barbulanympha without nuclear or cytoplasmic division. Journ. Morph., vol. 95, pp. 213-236.

1954b. Hormone-induced sexual cycles of flagellates. XII. Meiosis in Barbulanympha following fertilization, autogamy, and endomitosis. Journ. Morph., vol. 95, pp. 557-619.

1956. Hormone-induced sexual cycles of flagellates. XIV. Gametic meiosis and fertilization in Macrospironympha. Arch. Protistenk., vol. 101, pp. 99-169.

1956a. Brief accounts of the sexual cycles of the flagellates of Cryptocercus. Journ. Protozool., vol. 3, pp. 161-180.