PLATE 6 



Figs. 93-96. Haptomonads from mid-stomach. Haptomonads of this type 

 may be found attached to wall of the ' ' crop, ' ' posterior part of mid-stomach 

 or anterior part of pyloric expansion. Small, slender flagellates usually with 

 a vesicular type of nucleus are shown in figures 93-95. Figure 94. Nuclear 

 membrane distorted, karyosome excentric. Figure 96 may show degeneration 

 since there is no nuclear membrane and the chromatin is breaking up. 



Figs. 97-124. Haptomonads from pyloric expansion (Figs. 97-106). Transi- 

 tion haptomonads lining mid-portion of the pyloric expansion. Bodies becom- 

 ing pear-shaped; flagella largely absorbed and intracellular throughout length. 

 Nucleus usually vesicular. Binary fission is common among these forms. Their 

 size is reduced in this way. 



Figs. 107-124. Small haptomonads, found in the extreme posterior portions 

 of the pyloric expansion. They form a dense compact layer of parasites at- 

 tached to epithelial lining. Keduction in size shown, beginning with figure 107. 

 Degeneration is shown in the nuclear structure, as in figure 114, and in the 

 cytoplasm of figures 117, 118. Figures 118-124 are all haptomonads which show 

 advanced stages of degeneration; the cytoplasm is vacuolate and the nuclear 

 structure is no longer normal. Most of these have become detached from the 

 wall of the pyloric expansion. 



Figs. 125-131. A series of final spore forms from rectum, showing thick 

 periplast, deeply stained cytoplasm, and two chromatin bodies. Nuclear rhizo- 

 plast not visible in these deeply stained spores. 



[190] 



