100 
ON THE TWO METHODS OE EEPEODHCTION IN BAFSmA 
Subsequent changes in the same ovary. 
Fig. 6.j 
Fig. 7. Early stage of the ephippial egg. 
Fig. 8. The posterior part of the ovary, showing the httle balls into which the embryonic 
ephippial egg often breaks up. 
Fig. 9. Ephippial egg more developed. It has become so opake that the germinal vesicle 
cannot be seen. 
Fig. 10. Ephippial egg nearly ready to be laid. 
Fig. 3.1 
Fig. 4. 1 
Fig. 5. 
PLATE VII. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fi^ 
Fig. 
4 
Fig. 
Fig. 
Fig. 
Fig. 
1. Part of the back of a specimen of 1). Schwfferi, ready to lay an ephippial egg. 
2. Half of the inner valve of an ephippium, only in part finished. 
3. Half of the outer valve of an ephippium, only in part finished. 
4. Diagram of a section of the carapace along the line ni. The body is omitted. 
5. Diagram of a section of the carapace along the hne n. The body is omitted. 
6. Part of a female Baplmia ScTicefferi, showing the ephippium in outhne. 
Outline of a male JD. Schcefferi, to show the male generative organs [q). 
Part of an ovary of a B. Schcefferi, to show agamic eggs just beginning. 
Part of an ovary of a B. Schcefferi, to show agamic eggs in the process of forma- 
tion, each round a distmct germinal vesicle {g'). 
10. Ditto of another specimen. 
11. Contents of ephippial egg rolled together. 
12. Contents of agamic egg rolled together. 
13. An ovarian mass, containing three ovarian cells, any of which may become a 
germinal vesicle. 
The letters refer to the same parts in all the figures : — 
h. Line of the back of the body. 
c. Ovarian masses. 
e. Early stages of the ephippial egg. 
g. Ovarian cells, some of which become germinal vesicles, g' . 
h. Heart. 
i. Upper line of intestine. j. Lower line of intestine. 
p. Ephippium. q. Penis. 
r. Eeceptacle or space between the back and the shell. 
w. Outer and inner layers of old carapace. 
w'. Outer and inner layers of old carapace modified to form the ephippium. 
X. Outer and inner layers of new carapace. 
