FELICHTHYS 



PLATE IV 





9 



10 



11 



9. Young gaff-topsail about readv to hurst shell, x 3.5. (Natural size of egg, 18.5 mm). 

 10 Young with tip-tilted tail shortly after being freed from the egg shell, x 1.75. (Nat- 

 ural size of egg, 20 mm). 



11. Young in stage when "skating" over the bottom of the aquarium is the only method 



of progression, x 1.9. (Natural size, 58 mm). 



12. Young in free-swimming stage with bodv walls completely closed over the \ oik, x .88. 



(Natural size, 98 mm). 



