ON A NORWEGIAN FIORD 



Fig. 3. — One- of the polyps of Rhabdopleura which is attached by its soft 

 contractile stalk (c) to the dark internal cord seen in Fig. i. A similar 

 polyp issues during life from the open end of each of the upright tubes 

 seen in Fig. I, and is, when disturbed, pulled back into the- tube by the 

 contraction of the cord c. a, mouth ; b, vent ; c, contractile stalk ; 

 d, head-shield or disk ; e, the left gill-plane ; f, the body-mass enclosing 

 the intestine, etc. (From a drawing made by the author in Lervik, 

 Stordo, in 1882.) .For a full account of Rhabdopleura, see the " Quart. 

 Journal of Microscopical Science," vol. xxiv., 1884. 



