PRISMATIC TAPE-WORMS. 453 



I may take this opportunity of mentioning that long since (in 

 1871) I heard from Dr. Pauli, of Frankfort, of a case which was cor- 

 roboratory of Moniez's opinion, in so far as it displayed a chain of 

 sexually mature proglottides, one of which bore a lateral chain com- 

 posed of two long narrow joints. But since the first joint of the main 

 stem was (according to the drawing, for I have not been able to 

 examine the preparation) scarcely broader than the first accessory 

 joint, it is quite possible that the case may be explained by the 

 assumption of a simple division. 



With these double structures, the prismatic or triangular chains 

 we have previously mentioned may perhaps be associated. They 

 are, as we know (p. 396), formed from six-rayed heads, and may not 

 unfrequently be observed in Tcenia saginata. For the first mention 

 of them we are indebted to Bremser, 1 whose specimen is still pre- 

 served, according to Diesing, in the Imperial collection of Helminths 

 in Vienna. The worm consisted, according to Bremser, of two chains, 

 which were connected together throughout their entire length by one 

 lateral margin fastened to the other at a sharp angle. We have, un- 

 fortunately, no more exact description of the malformation, yet the 

 accompanying figure enables us to see that the two chains must have 

 been at approximately the same stage of development. The common 

 lateral border is projected into a sort of ridge bearing the generative 

 opening. Here and there another pore is present on another border. 

 Levacher 2 has observed a similar monstrosity, c 



only that here the kind of connection was 

 different, in so far as that the one chain was 

 fixed to the other in the middle line. It is 

 doubtful whether the difference represents a 

 real fact, or is not merely verbal, especially 

 since the other cases the Tcenia lophosoma 

 of Cobbold, according to Kiichenmeister's 3 in- 

 vestigations, the case of Cullingworth and the 

 proglottides sent mej by Professor Auerbach 

 of Breslau (Fig. 260) are all closely related FIG. 260. Prismatic pro- 



-r, , mi TT j. rn glottides (natural size). A, 



to Bremser s worm. The Hottentot Tcema, | rom the v side . By fr ; om ^ 

 too, described and figured in the first edition front ; <?. from behind much 

 of Kiichenmeister's " Parasiten " has also been 



shown by my investigations to belong to such forms, though the 

 author was at first inclined to regard it as a distinct species (Tcenia 



1 Loc. cit., p. 107, tab. iii., Figs. 12 and 14. 



2 Institut, p. 329, 1841. Comptes rendus, t. xiii., p. 661, 1841. 



8 "Parasiten," 2d ed., pi. 6, Fig. 6. On Cullingworth's case see Med. Times and 

 Gaz., Dec. 1873. For Cobbold's paper, see Trans. Pathol. Soc., vol. xvii., p. 438, 1866. 



