24 ENTOZOA FOUND IN MAN. 



human stomach iii order that they might be con- 

 verted into the taenia solium, and the other by the 

 introduction of the ova of this taenia into the stomach 

 of the pig with a view to the development of the 

 cysticercus cellulosai in that animal. 



Variety or Species B. Tcenia Inermis {Tcenia 

 mediocmiellata, Kiichenmeister). 



This is a very long, broad, and thick tape-worm 

 (much broader than the T. armata) ; its head, which 

 is of a dark colour, and is not armed with hooks 

 (whence its name), is large, and '078 of an inch (2 

 milHmetres) broad ; there is no rostellum, but the 

 suckers are very large ; the neck is short, though 

 more evident than that of T. armata ; the arrange- 

 ment of the canals in the head is more simple than 

 in the latter species of taenia, and the calcareous 

 corpuscles are larger, and more numerous ; the pos- 

 terior rings are very broad, being as much as 'QQ of 

 an inch (17 millimetres) in width, and from '35 to 

 •54 of an inch (9 to 14 millimetres) in length ; the 

 genital pores are irregularly alternate ; the pro- 

 glottides are large, and very lively, sometimes issuing 

 spontaneously from the anus between the periods of 

 defsecation, and causing most unpleasant sensations ; 

 when completely extended, the proglottides measure 

 •972 to 1-179 inches (25 to 30 milHmetres) in length, 

 and as much as '273 of an inch (7 millimetres) in 

 breadth ; the ova of the T. inermis are more oval, 

 smoother, and clearer, than those of the T. armata, 

 so that they allow of their embryos being more 

 easily seen. 



This taenia forms probably a distmct species, and 

 not merely a variety of the T. solium. 



