Fig. 
Fig. 
Fig. 
Fig. 
Porter. — Trichonympha. 
PLATE 2. 
All figures are of Trichonympha agilis. 
Diagrammatic longitudinal section through the anterior portion of 
Trichonympha, imagined to be not thicker than one band of cilia. 
Same as Figure 7, but showing an additional layer (st.”) in the nipple-like 
anterior extremity. 
Cross section through posterior portion or “body,” showing a fold in 
the body-wall, in which cilia have been engulfed. 
Section similar to that of Figure 9, except that particles of wood fibre are 
entangled with the cilia in the engulfed portion. 
spo. Spores of Fungi eaten by the animal. 
Diagram of a portion of the surface of the anterior end, the “ nipple,” 
and part of the “ bell.” 
Diagram of side view of same region as that shown in Figure 11. 
Complete longitudinal section, showing a gathering of a clear proto- 
plasmic substance about the nucleus; probably an early stage in 
the development of an immensely thickened nuclear membrane 
such as is shown in Figure 22. 
Cross section of posterior portion, showing a fold, as in Figures 9 and 10, 
the walls of which are beginning at a to disintegrate. 
Complete longitudinal section of an individual more shortened than that 
of Figure 13. 
Cross section in the region of the line 16-16, Figure 15, 
Diagrammatic cross section in the same region as Figure 16, 
Cross section of the nipple-like anterior extremity. 
The second section in a series of longitudinal sections, This is a portion 
of the bell, the outermost layer having been cut off with the first 
section from the middle of the figure, but remaining around the 
margin. In the centre is exposed the striated layer and the roots 
of the cilia arranged in quincunx. 
Diagram of the condition shown in Figure 19. 
Cross section in the region of the line 21-21, Figure 15, showing the 
radiating structure of the wall (st. gran., Fig. 7) separating the 
anterior from the posterior half of the animal. 
Longitudinal section showing an immensely thickened nuclear mem- 
brane. : 
Cross section in the region of the line 23-23, Figure 15. 
