163 



free, cut, or frilled as the worm grows weak, or when 

 placed in fresh water or alcohol."" 



From this diagnosis it appears that Crossohothrium 

 is closely related to Phyllohothriiim, and indeed the 

 cestode figured here resembles greatly Ph. thridax. The 



Kostellum 



r 



-■ Auxiliary 

 aceTabufum 



Pig. 18. Crossobotliriuia laciiiiatiini, Lintoii. Seolex seen from above. 

 Mag. 100 dia. 



differences, however which Linton emphasises as consti- 

 tuting the distinctive features of the genus are (1) the 

 bothria pedicelled here, instead of being sessile as in 

 Fhyllobothrium, and (2) the absence of a distinct neck. 



I refer a worm obtained from the large intestine 

 of Raid hatis very doubtfully to this species. The 

 specimen is indeed A^ery different in appearance from 

 Ph. thridax, but in dealing with such highly variable 

 structures as the bothria of these cestodes too much 



