

^ty^A^iA ^ dH & i& irS?<iCc 



i 



Microns 



Figure 309. — Electron micrograph of a section of ripe spermary of C. virgirnca. Longitudinal and transverse sections of 

 sperm heads and tails can be seen in various parts of the micrograph. A — acrosome; ax. b. — axial body; c.t. — cross 

 section of tails; l.s. — longitudinal section of sperm head; l.t. — longitudinal section of part of a tail; m.b. — mitochon- 

 drial bodies; N — nucleus; t.s. — transverse section of head. 



EGG, SPERM, FERTILIZATION, AND CLEAVAGE 



337 



