PROTOZOA 



II 



as Plasmodia. They are found in the Mycetozoa (Fig. 73) and 

 occasionally elsewhere. 



Pseudocolonies, consisting of distinct individuals united only by 

 stalks, tubes, etc., of dead material, are formed by various mastigo- 

 phora (Fig. 38) and vorticellids. 



Fig. 5- 



Fig. 4. Hexamitus i?itestinalis, x 3800. After Dobell. axs. axostyle; ba.gr. 

 basal granules of flagella; nu. nucleus. 



Fig. 5. Opalina ranarian, x 150. From Bronn. ecp. ectoplasm; 7iu. nuclei. 



The, protoplasm of living protozoa is often apparently homogeneous, 

 apart from inclusions such as granules of reserves and other manu- 

 factured substances, chromosomes, skeletal structures, and so forth. 

 Sometimes, however, there is visible in it an apparent meshwork of 



