Tank Nr. 24, 25. 



51 



Fig. 152. Rhombus maximus, 

 1 4 nat. size. p. 92. 1 



Fig. 153. Solea vulgaris, 

 Va nat. size. p. 92. 



Fig. 154. Cardium aculeatum, 

 J /2 nat. size. p. 84. 



Bivalves. Cockle [(Cardium, fig. 154); Pectuncnlus, much 

 larger, shell without spines. 



Tank Nr. 25 



showing other cases of imitation. 



Fishes. Scorpaena (fig. 43), ragged, mottled brown and 

 red. These with the Crabs, Maja (fig. 49), Pisa (fig. 146), 

 etc., closely resemble the stones among which they lie. 



