No. 5.] THE CESTODE MONIEZIA EXPANSA. 



227 



genital organs. Here no actual furrows are present, but the 

 relative positions of the two sets of organs, g and e /, indicate that 

 the set g corresponds to a longer portion of b than does the 

 set e f. 



Inter-proglottidal glands appear in all of the partial furrows. 



Figure II. 



This figure, representing a case of partial division, shows very 

 distinctly an almost complete gradation in individuality from the 

 right to the left, as indicated by the arrangement of the organs. 

 At the right the partial furrows separate the segments in a normal 

 manner, but the posterior segment is the shorter. Correspond- 



. .- . --J&%*> 



5/- *. 



>:.' ; l-*> ".-?*.*,, --,-;? 



FIG. ri. 



ing to the position of the furrows, two complete sets of organs 

 appear on this side, but the posterior set, especially the ovary, is 

 smaller and less fully developed than the anterior. 



The partial furrows end, however, near the middle of the body, 

 leaving the left half apparently undivided, and the left edge is 

 considerably shorter than the right. That the two segments pos- 

 sess a certain degree of individuality beyond the region where the 

 furrows end is indicated by the presence of two complete sets of 

 organs and ducts, which are, however, closely approximated and 

 open through a single pore situated at the middle of the undivided 

 edge. Even the terminal portions of the two sets of ducts are 

 distinct and two cirri are present. To judge from the arrange- 

 ment of the organs it appears that from right to left the segments 

 are less and less completely separated, until at the left edge the 



