96 PARASITES OF MAN 



the absence of experimental proof, I incline to the belief that 

 the worm in question owes its existence to measly mutton. 

 The sheep harbours an armed Cysticercus (G. ovis), which 1 

 regard as the scolex of Tcenia tenella. The specific name 

 (tenelld) was originally applied by Pruner to a cestode six feet 

 in length, which he found associated with a larger tapeworm. 

 This latter he called Tcenia lata. Whilst Diesing has pro- 

 nounced Pruner' s Tania lata to have been a T. mediocanellata, 

 I, on the other hand, consider Pruner' s T. tenella to have been 

 a T. solium. Mr J. C. Mayrhofer has suggested its identity with 

 Bothriocephalus tropicus. When, some years back, I applied 

 the term T. tenella to a new tapeworm (of which I possess 

 several strobiles) I was quite unaware than any similar nomen- 

 clature had been adopted by Pruner. From the few facts 

 supplied by Pruner and Diesing, I cannot suppose that our 

 cestodes are identical. Unfortunately my specimens are im- 

 perfect, wanting the so-called head. It is not possible to 

 estimate the length of the worm accurately, but the perfect 

 strobile must measure several feet. 



On one slide I have mounted nine mature proglottides of a 

 worm which I procured on the 15th Dec., 1875. The segments 

 measure, on the average, exactly ^" in length, and only 4" in 

 breadth. The uterine rosettes are all full of eggs, and their 

 branches so crowded together that I am unable to ascertain their 

 average number. The segments are perfectly uniform in 

 character, their reproductive papillae alternating irregularly at 

 the margin. 



In the autumn of 1872 I caused a lamb to be fed with the 

 proglottides of a tapeworm which I referred to this species. 

 The animal was slaughtered on the 22nd of January, 1873, 

 when the result was stated to have been negative. As I had 

 no opportunity of examining the carcase, I cannot feel quite 

 sure that there actually were no Cysticerci present. On several 

 occasions I have detected measles in the flesh of animals, when 

 none were supposed to be present by those who either assisted 

 ine or were professional on-lookers. Assuming my Tania tenella 

 to be derived from the sheep's Cysticercus, I think it fitting to 

 describe the mutton measle in this place. Even if T. tenella 

 be not actually the adult representative of the mutton measle 

 (Cyst, ovis), it is quite certain that the scolex in question 

 g ives rise to an armed tapeworm, and it is almost equally certain 

 that the adult armed cestode resides in man. In Pruner's case, 



