cestoda from mammals which died in the gardens. 921 



42. On the Cestode Parasites from Mammalian Hosts which 

 died in the Gardens of the Zoological Society of 

 London during tlie years 1919-1921 ; with a description 

 of a new Species of Cydorchida. By G. M. Vevers, 

 M.R.C.S., L.R.C.P., JF.Z.S., Beit Memorial Research 

 Fellow, and Assistant in the Department of Helmin- 

 thology, London School of Tropical Medicine. 



[Received November 6, 1922 : Read November 21, 1922.] 



(Text-figm^es 11-12.) 



During the period under review eleven species of Cestoda were 

 collected from thirteen mammalian hosts dying in the Gardens. 

 One of these is new to science, and has been placed in the genus 

 Cydorchida Fuhr. This is the first record of a member of this 

 genus occurring in a mammal, the only other species (C. omalan- 

 cistrota) being from a bird {Platalea leii,corodea). Two of the 

 species are larval forms ; of these it is interesting to note 

 Multiceps {Coe.nurus) serialis from the lung of the Coypu {^Alyopo- 

 tamus coypus), bred in Britain. The only other record of the 

 occurrence of this parasite in this particular host is that made by 

 Pagenstecher in 1877, the Coypu in this case being one which 

 had been in captivity in the Berlin Zoological Gardens (1). 

 Apart from this, the only other larval form noted was that of 

 Tcenia hydatigena {Gysticercus tenuicollis) from three Ungulates. 



Systematic List of Species. 



Gyclophyllidea (Adult forms). 



MESOCESTOiDiDiE Fuhrmann, 1907. 

 Mesocestoides Railliet, 1893. 



M. lineatus (Goeze, 1782), Railliet, 1893. 

 Anoplocephalid^ Kholodk, 1902. 

 ANOPLOCEPHALiNyE R. Blanchard, 1911. 

 MoNiEZiA R, Blanchard, 1911. 



M. expansa (Rudolphi, 1810), R. Blanchard, 1891. 

 LiNSTOwiN/E Fuhrmann, 1907. 

 Inermicapsifer Janicki, 1910. 

 I. pagenstecheri 3 Suwic^i^ 1910. 

 /. settii Janicki, 1910. 

 /. interpositus Janicki, 1910. 



