576 



DE. F. E. BEDDABD ON 



31. Contributions to the Anatomy and Systematic Arrange- 

 ment of the Cestoidea. By Fkank E. Beddard, M.A., 

 D.Sc, F.R.S., r.Z.S., Prosector to the Society. 



[Received February 6, 1912 : Read April 2, 1912.] 

 (Text-figures 72-83.) 



IV. On a Species op Inermicapsjfeb from the Hyrax, and 

 ON THE Genera Zschokkeella, Thysanot^nia, and 



EyBA COTJENIA . 



Index. 



Systematic : Page 



Inermieapsifer capensis, sp. n /. 593 



S:l/racotcBnia, gen. n ,.. 604 



H. capensis, sf. XI 604 



S. hyracis, s^. n 605 



Thysanotcenia (corrections and additions) 606 



Zschokkeella 607 



I obtained during the month of October 1911 a large number 

 of fair-sized unarmed tapeworms from the gut and from the gall- 

 bladder of an example of Procavia capensis, and I referred them 

 provisionally to the genus Zschokkeella of Fuhrmann * in my 

 Keport to the Prosectorial Committee, in spite of the fact that 

 the type species of that genus is a parasite of the Guinea-Fowl 

 Numida ptilorhyncha. I now refer them partly to the more 

 recently instituted genus Inermicapsifer f, the affinities of which 

 with Zschokkeella and my own genus Thysanotcenia, I shall deal 

 with in the present communication. The author of the genus 

 Inermicapsifer — and in the paper referred to — assigns to that genus 

 with certainty or with more or less doubt eight species. I shall 

 compare these individually with the species I have found myself. 

 Dr. Janicki is certainly justified in saying that " the fact is of 

 interest that the genus Inermicapsifer is parasitic in Procavia 

 with several nearly related species." 



From the intestine of Procavia capensis I have gathered 

 specimens of several distinct species, of which one was much 

 more abundantly represented than the others. The more 

 abundant species is represented in the accompanying text-figure 



It is a long and rather slender worm, about 95 mm. in length 

 and of 2 mm. greatest diameter. There are fully 200 proglottids 

 in this example. The head is very conspicuous and half as wide 

 again as the part of the strobila which ensues. Anteriorly the 

 worm is more slender, of less diameter, than it is posteriorly; 

 the increase is gradual, there being no sharp demarcation. The 

 body of these worms has a great tendency in specimens preserved 



* Centralbl. f. Parasit. etc. Bd. xxxii. 1902. 



t Janicki, " Die Cestoden aus Procavia," in Schultze's Zool. Ergebn. Forschungs- 

 reise in Siidafrika, Jena Denkschr. med. Ges. xvi., 1910. 



