310 N. M. Stevens. 



Figs. 29 a and b. Free egg containing 'besondere Korper' (iv) and pronuclei 

 (n). 4 mm. -2. 



Fig. 30. Two-cell stage of egg free in the ovary, showing the 'besondere Kor- 

 per.' 4 mm.-2. 



Fig. 31 . Section of 16-cell stage, free in the ovary. 4 mm. -2. 



Figs. 32 a and b. Sections of attached egg, showing degenerating accessory 

 cell (a) and nucleus (n) breaking down for maturation. 4 mm. -2. 



Figs. 33 a and b. A slightly later stage, egg still attached but mat. spindle 

 formed. 4 mm. -2. 



Figs. 34 a and b. Slightly later stage. 4 mm. -2. 



Fig. 35. Exceptional case where the 'besondere Korper' (A') is irregular in 

 form. 1.5-6. 



Figs. 36 a and b. Second mat. spindle (a) and spot of denser cytoplasm at 

 vegetal pole {b) of free egg. 1.5 mm. -2. 



