ON THE 



STRUCTURE OF CEKATELLA FUSCA 



(GRAY). 



By W. BALDWIN SPENCER, M.A., 



Professor of Biology in the University of KIcllii'in n, . 



*{iri;ivni. iiin.M -nil. THAN- ... ilu: Kov.M, Som/iv <n \'ici(H;i\ 101; 1861-. 



