NEW CESTODES FROM THE TASMANIAN DEVIL. 



681 



The greatest diameter of one of the suckers is not more than 

 one-tenth the diameter of the scolex at its widest part. 



Section through apex of scolex to illustrate relative size of one of two 

 smaller suckers (s.). 



g. Median groove formed hy retraction of sucker. 



On either side of the apical groove already mentioned was a 

 single cup-shaped sucker bearing hooks. I assume, therefore, 

 that these two suckers are really anterior in the fully expanded 

 condition of the scolex, and that they are the two disk-like bodies 



Proc. ZooL. Soc— 1912, No. XLY. 45 



