460 



Annals of the South African Museum. 



Protoplasts range in size from 5 to 8 p. The record is interesting, 

 since it is the first from the Eastern Province. 



From the foregoing the Volvox which now follows appears to differ 



B 



a. 



FIG. 5. V. Rousseletii f. nov. kaokoensis. 



A, Asexual coenobium with 8 daughters. x 60. 



B, C, Somatic cells and gonidia (g) in surface view. x 1000. 



D, Sperm globoids and peripheral cells, (a) antheridial cell. x 900. 



in certain respects, chiefly in the form of the oospore, but we have 

 examined only two samples (preserved). The material was mixed 

 with Lemna paucicostata and a large Oedogoniurn, and was somewhat 

 scanty. It was collected on two separate occasions from one locality. 

 In the absence of fuller material we classify this tentatively as a, form 

 of the above. 



