BOTHRIOCEPHALUS LATUS. 289 



CHAPTER IX. 



BOTHRIOCEPHALUS LATUS. 



General and specific characters of Bothriocephalus latus — Its geographical distribution — 

 Anatomy and development — Investigations of Schubart, Knoch, and Leuckart, 

 respecting the ciliated embryo — The adult worm occasionally found in dogs — 

 Probable source whence the larvse are obtained — Mode of egg discharge — Leuck- 

 art's account of a second species of Bothriocephalus infesting the human body. 



Dismissing tlie Toenice, properly so called, I must now devote a brief 

 chapter to tlie consideration of a small but interesting group of 

 human cestodes, presenting, indeed, a very general resemblance to 

 ordinary tapeworms, but differing from them in a most marked 

 manner as regards their intimate structure. Until comparatively 

 recent times, the Bothriocephali were regarded as species of the 

 genus Tcenia, and, even now-a-days, one occasionally meets with 

 disciples of the old school who persist in employing the ancient 

 Linnean title of Tcenia lata to indicate the broad tapeworm as 

 distinct from the common T. solium,. The synonymy of the first 

 species of this group is probably as follows : — 



18. Bothriocephalus latus. 



B. latus, Bremser ; Blainville ; Rudolphi ; etc. 



Dibothrium latum, Diesing. 



? Tcenia lata, Linneus ; Pallas ; Bloch ; Groeze ; etc. 



? T. vulgaris, Linneus ; Werner ; Retzius ; G-melin ; etc. 



T. dentata, Batsch ; Grmelin. 



T. tenella, Pallas ; Retzius. 



T. grisea, Pallas ; Schi-ank. 



p P 



