Tsou, Y. Hsuwen.-Born in Soochow, Kiangsu, 1884. Married, 1904. Studied at Government University, Peking, 1903-7. Chu Jen, 1907. Arrived in America, November, 1908. Government support. Studied Agricul-ture at Cornell University, 1909-12; Entomology at the University of Illinois, 1912-14; Plant Ecology at the University of Chicago, 1913-15. B.S., 1912; M.S., 1913. Elected to Sigma Xi, May, 1914. Author, "Homology of Setai of Lepidopterous Larvae", 1914. Returned to China, April, 1915. Professor of Entomology, College of Agriculture and Forestry, University of Nanking, 1915 to date. Associate Editor, Science.