ANDREWS. 



[Vol. II. 



Amphioxus eggs. The following three figures illustrate some 

 of the appearances seen in live and in preserved echinoderm 

 eggs, and may aid in justifying the conclusions formed as to 

 the nature of the intercellular connections found in Amphioxus. 



■■"■■ ■••^wM--:--:"; 



Fig. I. 



Fig. I represents a small part of a blastula of the starfish 

 common at Roscoff, France, and is reduced one-half from a 

 camera sketch made by G. F. Andrews in 1894 with oc. 8, obj. 

 2 mm., tube 170 mm. A small opening into the blastula is 

 seen, surrounded by cells that are actively spinning out fine 

 filaments by means of which they are variously connected with 

 one another and with the two polar bodies. These lie, in this 

 case, in the opening or cleavage pore, and are temporarily con- 

 nected to adjacent cells while giving off very remarkable den- 

 dritic pseudopodia, along which protoplasm flows and collects 

 in lumps. The chromosomes are not shown in the polar bodies. 



