Heart Urchin ( Echinocardium cordatum), xf. (pp. 39, 63, 66). 



TV. 20 



Spider Crab (Inctchus Dorsetttnsis), covered with sponge, and Notched 

 Wrack (Fucus terrains) with attached hydroids (Sertularia) and polyzoan 



(Alcyonidium), xf. (p. 63). 



