Tank Xr. 17, 18. 



29 



Tank Nr. 17, 18. 



Fishes. On the sand the Gurnard (Trigla, fig". 75), walkinp; on 

 six fingers (fin-spines) . *Flying gurnard (Dactijloptei'us , 

 fig. HJ), re liish, with hirge wing-like fins. In the warmer 

 months *File-fish {Balistes , fig. 77), oval , smudged Avith 

 black , mouth always apparently open, teeth projecting. 



Fig. 75. Trigla lyra (Gurnard), 

 '/., nat. size. p. 93. 



Fig. 76. Dactylopterus voUfans (Flying-gurnard), 

 Vs nat. size. p. 93. 



