PLATE 5 



EXPLANATION OF FIGURES 



24 and 25 Fundulu.'i heleroclitus 9 X Ctenolabi us adtipcrsus cf. Metaphase 

 spindles from a two-celled egg of the same lot as those figured in plate 4. The 

 figures are reconstructions from two sections. The elimination in each case is 

 toward the first cleavage plane. All of the chromosomes present on the spindle 

 do not appear in the drawing. 



