26 



Part first. 



Tank Nr. 12. 



Fishes. Gobies (Gobius, fig. 68), small and spiny; they 

 serve as food for Skates (Raja , fig. 69) and Electric 

 Rays (Torpedo, fig. 65). Both of these are fiat and 

 nearly hidden in the sand; the skate grey with pointed 

 snout, the electric ray brown, in one species (ocel/ata) 

 with five large spots, its head is semi- circular. Also 

 young Dog-fish (Scylliwn, fig. 59). 



Fig. 68. Gobius paganellm, 

 '/2 nat size. p. 93. 



Fig. 69. Raja punctata, 

 Va nat. size. p. 90. 



Tank Nr. 13. 



Fishes. Smaris (fig. 70), a pretty little silver fish with a 

 black finger-mark on each side. Red Mullet (Mullus, 

 fig. 71), with two white feelers in front of its chin. 



