1. KHLENTZOS, C. T. Am. J. Trop. Med. 30 , 785 ( 1950 ).
2. LEE , R. K. C., and PANG , H. Q. Ibid. 25 , 281 ( 1945 ).
3. LARSEN, N. P. Queen's Hosp. Bull. 2 , 1 ( 1925 ).
4. WATANABE M. Spec. Sci. Rept.: Fish. No. 25 Fish and Wildlife Service 209 (1950).
5. YUDKIN, W. H. Bull. Bingham Oceanogr. Coll. 9 , 1 ( 1944 ).