532 A DESCRIPTION OF THE ENTOZOA COLLECTED BY DR WILLEY 



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Nematomorpha. 



Oordius willeyi, Camerano "^^ 



LiNGUATULIDAE. 



Porocephaliis tortus, Shipley 5"^ 



INTRODUCTION. 



The collection of parasites brought back by Dr Willey from the far East was a 

 large and comprehensive one. If we include a small tick from the skin of the 

 "Malagea" snake Dipsadomorphus irregularis Merrem, which I have unfortunately failed 

 to get identified, the collection contains examples of all the groups of Metazoa which 

 infest land animals, except the Acanthocephala, and practically of all those, with the 

 exception of the Crustacea, which are found in or on marine creatures. 



The collection may be briefly summarized as follows : Trematodes, two species ; 

 Cestodes, seven species, including three new genera and six new species ; Nematodes, 

 six species, one of them new ; Nematomorpha or Gordian worms, one species, new ; 

 Pentastomids or Linguatulids, one species, new. 



I have as far as possible given the British Museum Catalogue names to the hosts, 

 and have throughout, in referring to journals and periodicals, used the abbreviations 

 which are suggested by Mr D. Sharp in the Zoological Record. 



I. TREMATODA. 



I. MONOSTOMUM TRIGONOCEPHALUM Rud. 



The following brief account of the literature precedes a detailed description of the 

 anatomy of this form. 



O'B. Bellingham. Ann. Nat. Hist. (i. Ser.), Vol. xiii. 1844, p. 337. 



The author has not found this parasite nor does he give any authority for in- 

 cluding it in his " Catalogue of Irish Entozoa," but he mentions that its host has 

 been occasionally thrown upon the English coast, so that the parasite has some " claim 

 to be considered British." Let us hope however that not every turtle is infested with 

 these Trematodes. 



C. M. DiESlNG. Systema Helminthum. Vienna, 18.50, Vol. I. p. 325. 

 References will be found here to the older literature and to the synonyms. 



P.-J. VAN Bkneden. Bull. Ac. Belgique (ii. Ser.), Vol. VL 18.59, p. 81. 

 This author appears to doubt if the Trematodes seen by Van Hasselt and Kuhl 

 and described by them under the names Monostoma rubrum and Monostoma album are 



