EXPLANATION OF PLATE III. 



T.enia bairdii, Kreffl { = Hymenolepis collaris, Batsch). 



Figs. 1, 2, 3, Showing shape of segments in different parts of the 



strobila. 

 Fig. 3. Segments showing young genitalia. 

 ,, 4. Transverse section of mature segment. 



Figs. 1, 2, and 3, are drawn from Krefft's type material. 



