370 



KOFOID AND SWEZY 



PLATE 4. 



Final stages (plasmotomy) in binary fission (Figs. 36-40), and formative 

 (Figs. 41, 42) and disintegrative phases (Figs. 43-45) of multiple fission or 

 formation and disintegration of the Plasmodium or somatella of Trichomonas 

 augusta Alexeieff and T. balrachorum Perty. X 2175. All from Diemyctylus 

 lorosus unless otherwise stated. 



Figure 36. Daughter nuclei diverging, axostyle almost completely cleft. 

 Figure 37. Axostyles completely severed, divergence of daughter mero- 



zoites increasing. 

 Figure 38. Convergence after wider separation. Compare text figure F. 

 Figure 39. Merozoites with blepharoplasts 180° apart in advantageous 



position for transverse plasmotomy. 

 Figure 40. Partial convergence after the phase of Figure 39. 

 Figure 41. Plasmodium or sometella in 4-nucleate formative phase of 



multiple mitosis. Only two axostyles present. From Bufo 



halophilus Baird. 

 Figure 42. Plasmodium in 8-nucleate stage with four axostyles. From 



Rana boylei Baird. 

 Figure 43. Disintegrative phase of somatella, with seven nuclei. From 



Rana boylei Baird. 

 Figure 44. Same with three nuclei. From Rana pipiens Kalm. 

 Figure 45. Same with three nuclei in Trichomonas balrachorum Perty. 



