PLATE 21 

 Bud formation in ComicUmania lafleuri 



Fig. 17. Eight-nucleate cyst with fasciculate chromatoidal body with one 

 end in a bud in the early stages of formation. Nuclei with dispersed karyo- 

 somes, and some peripheral chromatin. 



Fig. 18. The same stage, with chromatoidal body exhausted in formation 

 of chromophile ridge. Nuclei with scattered chromomeres. 



Fig. 19. Eight-nucleate cyst with fasculate chromatoidal body from one 

 end of which three narrow chromophile ridges radiate, one of which is emerging 

 at the pore in the cyst wall at its free end. Nuclei with central karyosomes 

 of dispersed type and little, if any, peripheral chromatin. 



Fig. 20. Eight-nucleate cyst with narrow, chromophile ridge, and a bud 

 with deeply chromophile cytoplasm emerging on top of the cyst through the 

 pore. No nucleus in the bud. Nuclei in prophase for next mitosis. No chro- 

 matoidal body except small spherical remnant. 



Fig. 21. Eight-nucleate cyst with heavy, wide, chromophile ridge, adjacent 

 to a dififusely chromophile area of the cytoplasm, no chromatoidal body. Nuclei 

 with central karyosomes of spireme type and no peripheral chromatin. Bud not 

 yet formed. 



Fig. 22. Eight-nucleate cyst with deeply chromophile bud containing one 

 nucleus, nuclei of spireme type, no peripheral chromatin, small remnant of 

 chromatoidal body left in cytoplasm. 



[196] 



