224 ANNIE PORTKU. 



Figs. 89-91. — Dividing forms. Mature puparium. Gienisa. 

 Figs. f»2-94. — Parasites resenililiiio;pre-flai^ellates produced from cyst. 

 Mature puparium. Delafield's liajinatoxylin. 

 Figs. 95, 96. — Small aggregation-rosettes. Intestine. Thionin. 



Figs. 97-114. — Post-flagellate Stages in Rectum. 



Fig. 97. — Parasite dividing prior to encystment. Inte.stine. Tliionin. 



Fig. 98.— Uneomuion form of division, occasionally seen in living 

 specimens. Rectum. Giemsa. 



Fig. 99. — Small form. Flagellum in process of absoi'ption. Rectum. 

 Giemsa. 



Fig. 100. — Parasite showing concentration of protoplasm in the region 

 of the nucleus. Rectum. Giemsa. 



Fig. 101. — Form common in rectum. Body much flattened. Flagellum 

 disappearing. Delafield's ha;matoxylin. 



Figs. lU'2-108. — Parasites showing jn-ogressive disappearance of 

 flagellum. Rectum. Tliionin. 



Figs. 109-112. — Post-flagellate cysts from rectum. Giemsa. 

 Fig. 113. — Post-flagellate cyst from fseces of Melophagus ovinus. 

 Giemsa. 



Fig. 114. — Thick-walled cy.st. Rectum. Giemsa. 



