3l8 J. E. WODSEDALEK. 



PLATE III. 



FIGS. 27, 28, AND 29. Metaphase of division in primary spermatocyte showing 

 the accessory chromosome and the chromatoid body. Fig. 27 shows two other 

 small and deeply stained bodies. Fig. 28 shows the accessory at one pole and the 

 chromatoid body at the other. Fig. 29 shows the accessory at the pole, and the 

 chromatoid body off the spindle and near the periphery of the cell. 



FIGS. 30 and 31. Late anaphase of division in primary spermatocyte showing 

 nine large chromosomes and the accessory at one pole, and nine large chromosomes 

 and the chromatoid body at the other. 



FIG. 32. Late anaphase of division in primary spermatocyte, showing nine 

 chromosomes at one pole, and nine chromosomes, the accessory, and the chromatoid 

 body at the other. 



FIG. 33. Two resulting cells of a primary spermatocyte division, one containing 

 the accessory chromosome and the other the chromatoid body. 



FIGS. 34 and 35. Late prophase of division in a secondary spermatocyte which 

 received the accessory chromosome. Cell represented in Fig. 35 also shows the 

 chromatoid body. 



FIGS. 36, 37, AND 38. Metaphase of division in the secondary spermatocyte 

 showing the division of the accessory in advance of the other chromosomes. Fig. 

 38 also shows the chromatoid body near the periphery. 



FIG. 39. Late anaphase of division in a secondary spermatocyte which received 

 the accessory chromosome, nine apparently bivalent chromosomes and the large 

 accessory can be seen at either pole and the chromatoid body is between the two 

 masses of chromosomes. 



FIGS. 40 AND 41. Spermatid showing nine bivalent chromosomes and the ac- 

 cessories. Fig. 41 also shows the chromatoid body. 



