380 C. H. MARTIN. 
future ventral surface along which, at a later stage, a deep 
ciliated groove is formed. A branch of the macronucleus 
passes into each bud and becomes twisted upon itself in 
rather a complicated manner, so that the macronucleus of 
the young embryo at quite an early stage is already a twisted 
band (text-figs. 8, 9). 
Shortly before the bud is set free the last strand connecting 
TExt-FIGc 8. TEXT-FIG. 9. 
TEXT-FIGURE 8.—Normal Ephelota with external buds. (Zeiss 
4 mm. apochr., comp. oc. 4.) 
'TEXT-FIGURE 9.—Free ciliated bud of Ephelota. (Zeiss 2 mm., 
apochr., comp. oe. 4.) 
its macronucleus with that of the parent form is broken 
through. 
Ill. TACHYBLASTON HPHELOTENSIS. 
At the beginning of May received large quantities of 
brown seaweed (Cystoseira) from Nisida, which were 
simply covered by Ephelota gemmipara, visible to the 
naked eye as minute yellow dots. In material brought on 
the 6th May I was struck by the fact that some of the 
Ephelota contained peculiarly refractile rounded bodies, and 
that none of the Ephelota which presented this appearance 
