SUMIDA ET AL . EARLY DEVELOPMENT OF SEVEN FLATFISHES 





FiGL'RE 1. — Scanning electronmicrographs of Pleuronichthys and Synodus lucwceps eggs. A. Entire egg of P. coenosus, 40 v ; B. 

 Single polygon from same egg showing micropyle and texture of chorion surface, 1 ,880 ^■, C. Side view of same egg showing polygons in 

 perspective and micropyle at lower left. 420 « ; D. Face view of same egg, 480  ; E. Side view of .S. /ucioceps egg showing polygons in 

 perspective, 455 ^ ; note delicate nature of polygons; F. Face view of same egg showing irregular nature of polygons and smooth surface 

 of chorion, 490  . 



109 



