1894.] ON SOME NEMATODE PARASITES. 531 



6. Notes on Nematode Parasites from the Animals in the 

 Zoological Gardens, London. By Arthur E. Shipley, 

 M.A., Fellow and Tutor of Christ's College, Cambridge. 



[Received June 8, 1894.] 



(Plate XXXV.) 



The materials for the following notes on internal parasites 

 found during the post-mortem examination of various animals 

 which died in the Gardens of this Society were forwarded 

 to me by my friend Mr. F. E. Beddard during the autumn of 

 1893. 



The collection included examples of five species of Nematodes 

 and of one specimen of Pentastoma. I was unable to identify one 

 small species of Nematode, of which there was bat one specimen, 

 taken from the walls of the lower intestine of a Ganis virginianus. 

 The other Nematodes belonged to the following four species : — 



1. Dicheilonema bispinosum, Diesing. 



There was but one specimen of this species, and this was rather 

 shrivelled and distorted. It was a male, 28 cm. in length, about 

 3 to 4 mm. in breadth in the middle of the body, and tapering 

 gradually at either end. 



The specimen was taken from the tissue surrounding the 

 intestine of a Boa constrictor ; according to Diesing it is found 

 under the skin as well as in the abdominal cavity of this snake, 

 and also amongst the coats of the intestine in OpJds saurocephalus, 

 and in the membranes surrounding the lungs and oesophagus of 

 Thamnobius poecilostoma in Brazil. 



This species was first called Filaria boce-constrictoris by Leidy 

 in the ' Proc. of the Acad, of Philadelphia,' vol. v. Diesing in his 

 ' Systeina Helminthum,' 1851, refers to it under the name Filaria 

 bispinosa, a name accepted by Leidy in the ' Proc. of the Acad, of 

 Philadelphia,' 1856, p. 56; but in his "Revision der Nemotoden," 

 in the ' Sitzungsberichte der k. Akad. in Wien/ Bd. xlii. 1861, 

 Diesing mentions it under the name quoted above, Diclieilonema 

 bispinosum. 



2. Physaloptera turgida, Rud. 



Numerous specimens of this species were taken from the 

 stomach and intestine of Azara's Opossum, Diddphys azarce. The 

 species is described by Dujardin in his ' Histoire Naturelle des 

 Helminthes,' 1845, p. 92, under the name Spiroptcra turgida, and 

 by Schneider in his ' Monographic der Nematoden,' 1866, p. 62. 

 It has also been found in Diddphys cancrivora and D. nudicaudata 

 and viryiniana. 



