Smallwood. — Maturation Haminea. 



PLATE 2. 



Fig. 5. Polar view of the centrosome of an egg taken from the hermaphroditic 

 duct. Iron hematoxylin. X 1080. 



Fig. 6. Section of centrosome in a plane oblique to the axis of the first matura- 

 tion spindle, from an egg taken from the ovotestis. Iron haematoxylin. 

 X 1680. 



Fig. 7. Nucleus of growing ovocyte from the ovotestis. Vacuoles in the nucleolus 

 displacing the chromatin. Iron haematoxylin. X 1224. 



Fig. 8. Nucleus of growing ovocyte from the ovotestis. The contents of the 

 nucleus is granular. Delafield's haematoxylin and eosin. X 1224. 



Figs. 9-12. Four successive stages in the metamorphosis of the germinative 

 vesicle. The centrosome becomes smaller, and the five bodies more or 

 less completely fuse witli one another. The central spindle is present, 

 showing the formation of the chromosome vesicles and the accumula- 

 tion in tiiem of chromatin. Iron haematoxylin and Bordeaux red. 

 X 1680. 



