306 DR. T. S. COBBOLD ON HUMAN ENTOZOA. [NoV. 25, 



witli Prof, van Beneden, that here hes the secret of MM. Pouchet 

 and Verrier's adverse conclusions. 



22. T^NiA MEDiocANELLATA, Kiichenmelster. 



T. mediocanellata, Kiichenmelster, Miiller, Gurlt, Eschricht, Van 

 Beneden, Leuckart, Weinland. 



T. solium, Bremser (and others, in part). 



T. dent at a, Nicolai. 



T. cucurhitina grandis saginata, Goeze. 



T. inermis, Moquin-Tandon. 



T. tropica, Moquin-Tandon. 



1 T. e cajpite bonce spei, Klichenmeister. 



? T. capensis, Moquin-Tandon. 



Tceniarhynchus mediocanellata, Weinland. 



Ci/sticercus tcenice mediocanellatce, Leuckart. 



The establishment of this species as distinct from T. solium is un- 

 questionably due to Klichenmeister ; but it is not a little curious to 

 observe how accurately this determination was foreshadowed by that 

 shrewd naturalist and theologian, J, A. E. Goeze, who, in his 

 ' Versuch einer Naturg. der Engeweirlewiirmer thierischer Korper,' 

 clearly indicates two forms of the common Tapeworm, remarking 

 (p. 278) : — " Die erste ist die bekannte grosse, mit langen dicken 

 und gemasteten Gliedern, die ich Tcenia cucurhitina, grandis, sagi- 

 nata, nennen will." The same author (p. 245), it will be remem- 

 bered, also pointed out the resemblance subsisting between the tape- 

 worm of the cat {T. erassicollis) and the vesicles (" Krystallblasen ") 

 and their contained " erbsformige Blasen " {Cysticercus fasciola- 

 ris) of the mouse. It is unnecessary here to indicate the distinctive 

 peculiarities of the two species ; but the characters presented by the 

 head are certainly insufficient to warrant the formation of a new 

 genus for the reception of this species. Thinking otherwise. Dr. D. 

 r. Weinland has suggested the generic title of Tceniarhynchus. In 

 regard to the original development of this bookless flat-headed tape- 

 worm, the recent experimental researches of Leuckart incontestably 

 prove that the " measles," or Cysticerci which produce it, are to be 

 found in the muscles and internal organs of cattle ; and in his valu- 

 able work (' Die menschlichen Parasiten,' p. 406 et seq.), now in 

 course of publication, he gives a condensed account of his experi- 

 ments with the fresh eggs of Tcenia mediocanellata. He fed two 

 calves with the proglottides of this worm. The first animal experi- 

 mented on died from a violent attack of the measle-disease, which 

 resembles a kind of leprosy. On dissecting this calf, the muscles 

 were found filled with measles, or imperfectly developed scoleces. 

 On the second occasion a smaller number of proglottides (in all about 

 fifty) were administered ; but the febrile symptoms again appeared 

 with such virulence that Leuckart thought this animal would die 

 also. Fortunately, after the lapse of a fortnight from their com- 

 mencement, some abatement of the disease took place ; and this gra- 

 dually continued until the animal was perfectly restored to health. 



