l^UDIBRANCHIATA OF THE L.M.13.C. DISTRICT. 1G9 



Fig. 10. A few of the yellow (a) and red (h) cells squeezed 



out of the last when alive. Z. ^^ 

 Fig. 11. Transverse section through tip of one of cerata 



of Galvhia jncta, showing the cnidophorous sac 



{c.s.) S. h 

 Fig. 12. Apex of one of the cerata of Cratena virldis, 



mounted entire and seen in optical section, 



showing the opening {cip.) of the cnidophorous 



sac {c.s.) to the exterior, and the clumps of 



gland cells (gl.). S. i 



