314 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Fig. 21 is a general view of the scolex. The myzo- 

 rhynchTis is very long and slender and bears at its tip a 

 " cephalic bulb." The four bothria are each borne on a 

 long and highly mobile pedicel. In the figure one of 

 the bothria is seen from above, and close to it, on the right 

 hand, is one seen from the side ; fig. 21 B is a view of one 

 bothrium seen from above and should be compared with 

 the right hand bothrium in fig. 21 A. The structure appears 

 to be a kind of hollow bulb with a triangular opening on 

 the top. Hound this opening, but at some distance 

 from its margin, is a raised rim from which a series of 

 five or six radial ridges pass inwards towards the large 

 central opening. 



In this specimen the latter portion of the strobila 

 is missing, and the characters of the proglottides actually 

 present are of little value for the purposes of identification. 



Anthobothrium auriculatum, Budolphi. — PI. xvi., Figs. 1, 2. 



Four specimens of a cestode were obtained in 1905, 

 which appear to be identical with the cestode described as 

 above. Two of the specimens were obtained from Raia 

 clavata caught on Duddon Banks, but I have no record 

 of the host of the other two worms. 



The measurements of the worm figured are : — 

 Greatest diameter of the head : 3 mm. ; 

 Greatest diameter of one bothrium : 1*3 mm. ; 

 Least diameter of one bothrium : 1 mm. ; 

 Length of strobila : 86 mm. ; 

 Width of proglottides behind the head : 



0'48 mm. ; 

 Length of proglottides behind the head : 



004 mm. ; 

 Width of terminal proglottis : 2 mm. ; 

 Length of terminal proglottis : 2'5 mm. ; 

 Diameter of largest ovum : 0043 x 0040 mm. 



