306 ON THE TENTACLES OF BLENNIUS GATTORUGINE. 



Fig. 9 a. Blennius ocellaris. Part of transverse section of tentacle. 



M., a flask-shaped mucous cell, n., its nucleus surrounded by the residual 

 protoplasm. Other lettering as before. Cam., oil-imm. y^" . oc. X 8. 

 Fig. 10. B. gattorugine. Isolated elements from the epidermis of the tentacle, treated with 

 osmic acid. 



A, " Kolben." B, round form of mucous cell, blackened with osmic acid, 

 c, cup-like cavity of Kolben. n., eccentric nucleus of mucous cell. Cam. 

 obj. ^", oc. X 8. 



