PoKTEH. — Trichonympha. 



PLATE 5. 



All figures are of Pyrsonympha vertens. 



Fig. 56. Section of a portion of the intestine of a Termite, showing numerous 

 young Pyrsonympliffi, the manner in which they attach themselves to 

 the host, and the effect on the cells of the intestinal wall. X 1100. 

 a, a. Spaces due to shrinkage. 



Fig. 57. Young Pyrsonympha without a fiagellum. X 520. 



Fig. 58. Young with a flagellum. X 520. 



Figs. 59, GO, 65. Some of the shapes taken by a single living immature individual 

 in the course of a few minutes. 



Fig. 61. Young, showing that the flagellum takes the same direction as (is differ- 

 entiated from?) one of the superficial mu.scular cords. X 1100. 



Fig. 62. Small Pyrsonympha, perliaps recently formed by division. X 520. 



Fig. 63. Young Pyrsonympha without a flagellum. X 520. 



Fig. 64. Small individual. 



Fig. 65. Same individual as that shown in Figures 59 and 60. 



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