224 The Sarcodina 



clearly represented in Arachnula Cienkowski (Fig. 5. 16, H, I), Leptomyxa 

 Goodey (Fig. 5. 17), and Vampyrella Cienkowski (Fig. 5. 16, A-G). Arach- 

 nula may be a synonym of Vampyrella (33). Chlamydomyxa Archer, 

 as represented by C. montana Lankester, closely resembles Leptomyxa 

 Goodey and it is not certain that the two should be placed in separate 

 genera. The mature stage of C. montata is a large plasmodium, the pseu- 

 dopodia are similar to those of Leptomyxa, and several endocysts are 

 produced within an ectocyst. 



The life-cycles appear to be fairly simple. Excystment of a young plas- 

 modium is followed normally by growth and nuclear division. In addi- 







Fig. 5. 17. A-G. Leptomyxa reticulata Goodey: A. Multinucleate plas- 

 modium, which may reach lengths of 2-3 mm.; x550. B. Ectocyst with six 

 endocysts; x880. C. Single endocyst; x880. D. Small plasmodium after emer- 

 gence from cyst. E. Plasmodium penetrating a root; x3I2. F. Plasmodium ex- 

 tending through several cells; x312. G. Stamed cyst with many nuclei; xl83. 

 A-D, after Singh; E-G, after MacLennan. H. Biornyxa merdaria Hollande, 

 x960 approx. (after H.). I. Biornyxa vagans Leidy, xl25 (after L.). 



