to 



structure etssentin.il/ like in Fig. 43, U III., 



omittin rotoplae i , in f '72, Pigs 5 and 6, 



, r E essenti ■ ructures in t] 



of :he Trout Joes Henneguy f '88) in his - .38, 



. XVII. 



- . 1^ ?1. I . , i. un- 



atorial furrow has cut off three upper from 



four lower celxs . of / vi 



fro 

 is blastoderm is shown in the next figure (Fig.15), Here 



the two meridi is 



no trace oj or equate row. The segmentation 



cavity f s.c . ) is so small as to he almost n< 



Ly no section of - . ven but a 



parison between it and . . Ill, will make clear its 

 internal make-up. 



These nine figures of - it- celled : 

 intrc show; (1), t ies which en- 



(2), that these ail result fro it ion of ' 

 furrow, which, ordinarily, meridion illel to the 



first an< icular to the secon ivision, here 



become ec/ , that the irregularities thus re- 



sulting .;.q„,' be re to 



