204] 



The Classification of Lower Organisms 





Fig. 40. — a, Labyrinthula as a parasite in cells of Ectocarpus Mitchelliae x 1,000 

 after Karling (1944). b. Cell of Labyrinthula x 2,000 after Young (1943). 

 c, d^ Sappinia pedata, active cell and cyst, x 1,000 after Dangeard ( 1896) . e, f, Sap- 

 pinia pedata, cluster of pseudospores x 100 and single pseudospore x 1,000 after 

 Olive (1902). g, h, Guttulina scssilis, cluster of pseudospores x 100 and individual 

 pseudospores x 1,000 after Olive (1902). i-n, Dictyostelium discoideum x 10 after 

 Bonner (1944) : i, the pseudoplasmodium; j, it heaps itself up; k, falls toward the 

 light and creeps; 1, m, again heaps itself up and becomes a fruit, n. o, p. Fruits of 

 Dictyostelium mucoroides; q, of Polysphondylium violaccum; x 10, after Bonner, 

 op. cit. 



