420 



Mr. H. A. Baylis on a remarkable 



simply an extraordinarily elongated " neck/' precociously 

 developed within the bladder of the cysticercus. The coils of 

 this tube run in various directions (figs. 1 & 2, N.), but in 

 the main antero-posteriorly. After fixation of the worm it 

 is impossible to straighten out this neck for the purpose of 

 measuring it ; but Moniez calculated that in "one moderate- 

 sized specimen examined by him it measured 6.5 centimetres, 

 and the length was probably greater still in larger specimens. 

 It must, at all events, be many inches in length. 



Fig-. 3. 



" Cysticercus T(BnicB Grimaldiiy The scolex, as seen by transparency 

 within the swollen blind end of the " neck." 



B., bothridium ; P., terminal papilla; S., accessorj' sucker. 



The structure of the scolex (fig. 2, S., & fig. 3) is espe- 

 cially important. Moniez dismisses it with the statement 

 that it is provided with four suckers and destitute of hooks. 

 In reality, however, its suckers deserve special attention. 

 They are, strictly, " bothridia " of the type seen in certain 

 Cestodes of the family Phyllobotliriidpe — i. e., they iiave the 

 form of elongated flaps (fig. 3, B.) attached to the scolex at 

 their anterior ends and hanging freely posteriorly. Their 

 edges are slightly curled inwards at the sides and behind, 



