136 



PROTOZOOLOGY 



nuclear membrane. Such is the condition found in Cryptomonas 

 (Belaf), Rhizochrysis (Doflein), Aulacantha (Borgert), and in micro- 

 nuclear division of the majority of Euciliata and Suctoria. 



The behavior of the endosome during the mitosis differs among 

 different species as are probably their functions. In Eimeria schuhergi 

 (Schaudinn), Euglena viridis (Tschenzoff), Oxyrrhis marina (Hall), 

 Colacium vesiculosum (Johnson), Haplosporidium limnodrili (Gran- 



FiG. 62. Nuclear division in Lophomonas hlattarum, X1530 (Kudo), 

 a, resting nucleus; b, c, prophase; d, metaphase; e-h, anaphase; i-k, telo- 

 phase. 



ata), etc., the conspicuously staining endosome divides by elongation 

 and constriction along with other chromatic elements, but in many 

 other cases, it disappears during the early part of division and reap- 

 pears when the daughter nuclei are reconstructed as observed in 

 Monocystis, Dimorpha, Euglypha, Pamphagus (Belaf), Acantho- 

 cystis (Stern), Chilomonas (Doflein), Dinenympha (Kirby), etc. 



In the vegetative division of the micronucleus of Conchophthirus 

 anodontae (Fig. 63), Kidder (1934) found that prior to division the 

 micronucleus moves out of the pocket in the macronucleus and the 



