— 13 — 



of the sac, where they seem to form two distinct hoods. From 

 the presence of such hoods we may at once, even at low po- 

 wer of the microscope, distinguish whether we have before 

 us the intracellular or intercellular stages of the parasite. 



Explanation of figures on the plate. 



Fig. 1. Sarcocysiis biibalis. Oc. 6; obj. Reichert JV2 3. 



Fig. 2. The spore of the same species. Oc. 6; obj. Zeiss. Imm. 2 mm. 



Fig. 3. A long sac of S. bubalis inside of a contracted muscle-fibre. 

 Oc. 6; obj. Zeiss 32 ram. 



Fig. 4. The arrangement of ectopiasniatic rods on the surface of a 

 contracted sac of S. bubalis. Oc. 6; obj. Zeiss Imm. 2 mm. 



Fig. 5. The spore of Sarcocysiis woodlioiisi. Oc. 6; obj. Zeiss Imm. 



2 mm. 



Fig. 6. A sac of S. woodhoiisi lying in the intermuscular connective 



tissue Oc. 6; obj. Reichert JV2 3. 



Fig. 7, One of the ends of an intramuscular sac of S. looodhousi. Oc. 

 6; obj. Zeiss 4 mm. 



Fig. 8. One of the ends of an intermuscular sac of S. woodhousi. Oc. 

 6; obj. Zeiss 4 mm. 



30 



