312 JOHN W. SCOTT. 



EXPLANATION OF PLATE I. 



FIG. i. Diagrammatic drawing of cysticercus of T. serrala enclosed in cyst. 



(X4-) 



FIG. 2. An evaginated cysticercus of about the same size as the preceding. 

 This specimen was treated with diluted artificial gastric juice followed by artificial 

 pancreatic juice. ( X 4.) 



FIG. 3. Optical section of the anterior end of the cysticercus shown in Fig. I, 

 with a rather complicated invagination. Drawn with aid of camera lucida. 

 (X 18.) 



FIG. 4. Appearance of the scolex after evagination; parts slightly altered in 

 position by pressure of cover-glass. Drawn with aid of camera lucida. ( X 46.) 



