REPRODUCTION 



173 



trophozoites of several coelozoic myxosporidians, such as Chloro- 

 ■myxumleydigi, Sphaeromyxa balbianii (Fig. 70), etc. It occurs further 

 in certain Sarcodina such as Mycetozoa (Fig. 179) and Pelomyxa 

 (Fig. 71), and Protociliata. 



Fig. 71. Eight individuals of Pelomyxa carolinensis, seen undisturbed 

 in culture dishes, in which mitotic stages occurred as follows, X40 (Kudo) : 

 a, early prophase; b, c, later prophase; d, metaphase; e, f, early and late 

 anaphase; g, h, late telophase to resting nuclei (g, plasmotomy into two 

 individuals; h, plasmotomy into three daughters). 



Colony formation 



When the division is repeated without a complete separation of 

 the daughter individuals, a colonial form is produced. The compon- 



