Osmotic Relationships in Opheodesoma spectabilis — Freeman 
69 
Fisher, W. K. 1907. The holothurians of the 
Hawaiian Islands. Proc. U. S. Nat. Mus. 32: 
637-744. 
KROGH, A. 1939. Osmotic Regulation in Aqua- 
tic Animals. Cambridge Univ. Press. 242 pp. 
Koizumi, T. 1935. Inorganic composition of 
tissues in the holothurian Caudina, and effects 
of changes in the medium. Sci. Rep. Tohoku 
Univ. ser. IV ( 10) : 269-275, 277-286. 
Hyman, L. H. 1955. The Invertebrates: Echino- 
dermata, The Coelomate Bilateria. McGraw- 
Hill Book Co., N. Y. 4 vols. 
Lange, R. 1963. The osmotic function of amino 
acids and taurine in the mussel, Mytelus en- 
dulis. Comp. Biochem. and Physiol. 10(2): 
173-179. 
Prosser, C. L., and F. A. Brown, Jr. 1961. 
Comparative Animal Physiology. 2nd ed. W. 
B. Saunders and Co., Philadelphia. 
Robertson, J. D. 1957. Ionic regulation in 
aquatic invertebrates. In: B. T. Scheer, ed., 
Recent Advances in Invertebrate Physiology. 
Univ. Oregon Press. Pp. 229-246. 
U. S. Hydrographic Office 607. 1955. In- 
struction Manual for Oceanographic Observa- 
tions. 2nd ed. 
