Porter. — Trichonympha, 
PLATE 5. 
All figures are of Pyrsonympha vertens. 
Fig. 56. Section of a portion of the intestine of a Termite, showing numerous 
young Pyrsonymphe, the manner in which they attach themselves to 
the host, and the effect on the cells of the intestinal wall. >< 1100. 
a, a. Spaces due to shrinkage. 
Fig. 57. Young Pyrsonympha without a flagellum. > 520. 
Fig. 58. Young with a flagellum. X 520. 
Figs. 59, 60, 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 muscular cords. >< 1100, 
Fig. 62. Small Pyrsonympha, perhaps 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. 
