PLATE XV. 



Fig. 1. Advanced larval Plaice, Pleuronectes platessa. May 7, 1886. 

 W. C. M. 



2. Young (metamorphosing) ditto, 10 mm. long. E. W. Holt. 



3. Young (metamorphosing) ditto, 12'8 mm. long. E. W. Holt. 



4. Young ditto (bottom stage), 21 mm. long. E. W. Holt. 



5. Young Plaice, bottom stage. C. J. Petersen. 



6. Larval Lemon Dab, Pleuronectes microcephalus, 1st day. The 



greenish yellow has been made diffuse to save complexity 

 in the figure. E. Teviotdale. 



7. Larval ditto, ventral view. "W. C. M. 



8. Late ditto. W. C. M. 



9. Post-larval ditto. July 4, 1893. A. T. M. 



10. Post-larval ditto, 10'37 mm. E. E. Prince. 



11. Post-larval ditto, pelagic stage. E. E. Prince. 



12. Post-larval ditto, pelagic stage. E. E. Prince. 



13. Post-larval ditto, pelagic stage. E. E. Prince. 



14. Young ditto, bottom stage. W. C. M. 



