CYSTICERCUS ACANTHOTRIAS 241 



been published by Redon. 1 This author, amongst numerous 

 Cysticerci cellulosce of a man, found one that had 41 hooks in three 

 rows, and he was the first to express the opinion that Cysticercus 

 acanthotrias does not represent a distinct species, but is only an 

 abnormality of Cysticercus cellulosce. This view was also taken by 

 Blanchard and Railliet, and is probably correct, as the discovery 

 of the large Tcenia belonging to it and furnished with three rows 

 of hooks is not to be expected in European beasts of prey, and in 

 Redon's case Cysticercus acanthotrias as well as Cysticercus cellulosce 

 occurred simultaneously. 



The duration of life of Cysticercus cellulosce in man is very 

 long ; cysticerci of the eye have been known to persist for 

 twenty years, and in Cysticercus of the brain ten to nineteen 

 years may elapse from the first appearance of cerebral symptoms 

 until death. Dead cysticerci may shrivel up or become calcified, 

 perhaps also become fatty-degenerated and then absorbed. Finally, 

 it may be mentioned that if particular proof is required that Cysti- 

 cercus cellulosce of man is connected with the cycle of development 

 of the Tcenia solium, such proof has been furnished by Redon (I.e.). 



NOTE. Tcenia tenella, mentioned on p. 214, was ascribed by Cobbold 

 to Cysticerci of the muscular system of sheep. It has, however, been 

 demonstrated that these cysticerci belong to the cycle of development of 

 Tcenia marginata (dog) (Cyst, tenuicollis, from the omentum of sheep) ; 

 but, as already stated, Cysticercus cellulosce also occurs in sheep. Chatin 

 himself swallowed the cysticercus, which Cobbold termed Cysticercus ovis, 

 without causing a taenia to develop in his intestine. Miiller also vainly 

 sought to induce the colonisation of Cysticercus tenuicollis in his own 

 person. On the other hand, the feeding of a dog with Cysticercus ovi-. 

 resulted in the production of Tcenia marginata. 



LITERATURE. 



The most important literature on Tcenia solium and Tcenia saginata : 



KUCHENMEISTER, E. Ueb. Cest. i. Allg. u. die d. Mensch. insbes. Zittau, 1853. 



Exper. Nachw., dass Cyst, cellul. sich in Taenia solium umwandelt. (Wien. med. 



Wchschr. 1855, 1856, No. i, p. 319. Dtsche. Klinik., 1860, xii., p. 187), 

 LEUCKART, R. Die Blasenbandw. u. ihre Entw., Giessen, 1856. 



Finnenzust. d. T. medioc. (Gott. Nachr., 1862, pp. 13 and 195). 



Thier., Paras, d. Mensch, ist and 2nd edit. 

 HAUBNER. In Mag. f. d. ges. , Thierhlkde, 1854, xx., pp. 243 and 366; 1855, 



xxi., p. 100. 



GERLACH, A. C. Fiitterungsvers. bei Schweinen mit T. solium. (Jhrsber. Kgl. 

 Thierarzneisch., Hannover, 1869 [ l8 7o]. ". PP- 66 anci 6 9-) 



1 Redon, " Exp. sur le dev. rubanaire de Cyst, de I'homme " (C. R. Ac. sc. 

 Paris, 1877, vol. Ixxxv., p. 675; Gaz. mtd. Paris, 486 ann., 1877, p. 510; Arch. 

 v&ttv. publ. d Vtcole d'Alfort, 1877, ii., p. 910; Ann. d. sc. nat. Zool., 1877 [6], 

 vi., art. No. 4.) 



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