xiv ILLUSTRATIONS IN COLOR 



FACING 

 PAGE 



Plate VI. — Yellow-Tailed Surgeonfish Xesurus 



laticlavius (Valenciennes) .... 290 



Painted by Isabel Cooper. 



Plate VII. — Fig. A. Squid Throwing Out a De- 

 fensive Smoke Screen of Sepia Ink. Fig. B. 

 Deep Sea Prawn Emitting a Luminescent 

 Defensive Cloud ...... 346 



Painted by Helen Tee- Van. 



