546 



CHARLES R. STOCKARD 



Fig. 16 A brown chromatophore on the yolk of a 5 day embryo. The cell is 

 coming in contact with two vessels shown in outline. The moss-like processes 

 extend from all sides of the cell. 



Fig. 17 A similar cell 12 days old surrounding a yolk vessel. The complex 

 processes from this cell are quite in contrast to the almost smooth border of the 

 black chromatophores of figures 14 and 15. The brown cells never fuse to form 

 syncytia. 



