Pseudo-Reduction in the Oögenesis of Allolobopliora foetida. 165 
first spindle. The large nucleolus has almost disappeared, while the small nucleolus 
is still dense and chromatic. 
Photo 17. A germinal vesicle of an egg from the receptaculum ovorum, at about 
the same stage of development as the one sho\vn in photo 16. 
Photo 18. A germinal vesicle of an egg from the receptaculum ovorum, shomng 
the eleven bivalent chromosomes more contracted than those in photos 16 and 17. 
There is no longitudinal split visible in these chromosomes, although several of them 
have divided transversely. Remains of the large nucleolus can be seen but the small 
nucleolus has disappeared. 
Photo 19. In this preparation the membrane of the geiminal vesicle has broken 
dowm and the large and small nucleolus have disappeared. The chromosomes have 
reached the stage of development found at the metaphase of the first maturation spindle. 
See Foot and Strobell (05) — photo 128. In the first division these eleven chromo- 
somes separate transversely. 
