166 J- Moore, Some Points in the Spennatogenesis of Mammalia. 



Fig. 24. Young Spermatozoon. 



Fig. 25. 



Fig. 26. 



Fig. 27. „ 



Fig. 28. „ 



Fig. 29. Young Spermatozoon of Rabbit. 



Figs. 30, 31, 33. Stages of akinetic division, in spermatid of dog with archoplasmic 



metamorphosis. 

 Fig. 32. Diagram of the hetrotype division. 

 Fig. 34. Intermediate bodies of Flemming, and origin of archoplasm after the 



hetrotype division. 

 Figs. 35 — 36. Reproductions of photographs of resting spermatocytes. 

 Fig. 37. Showing the dictyosomes formed at a later stage in division, Branchipus. 



