ON FJTiARTIU WOUMS FROM MAUHFALS AND BIRDS. 4!»1 



'M. Filariid Worms from Mammals and Birds in the 

 Society's Gardens, 1914-1D15. By C L. BoULENGER, 

 M.A., D.Sc, F.Z.S., Prof'es^-or of Zoolooy, Universitj' 



of the Panjal), T/aliore. 



[Received Se])toinber 1, 1920: Read Novenilx'v 16, 1920.] 



(Text-figmes 1-12.) 



Index. 



Page 

 Introduction 491 



Filaria subctitanea v. Linst 492 



Acantliocheilonema cliacantJia (Molin) 494 



„ gracile {R\i6..) 496 



DicJieilonema Jiorrirhiin (Dies.) 499 



Diplotricena tricuspis (Fedtsch.) 499 



,, diuc(B, sp. n 501 



„ flabellata {Y.hmst.) 502 



Filaria aramidis, sp. n 503 



In Februaiy 1914, I was asked by the Prosectorial Committee 

 to undertake the identification of the Nematode parasites 

 obtained at the Society's Gardens, and mateiial was forwarded 

 to me from the Prosectorium at regular intervals until the 

 beginning of 1916. Dnring this period monthly reports, con- 

 taining provisional identiiications, were sent to the Committee, 

 tlie material being laid aside for f nrther investigation. My study 

 of the collection thus accumulated was interrupted by my depar- 

 ture for Mesopotamia on war service, and was only resumed three 

 years later at the end of 1919. 



The material described in the present memoir consists of the 

 representatives of the Family Filariidse obtained from Mammals 

 and Birds in the Gardens. Altogether eight species were met 

 with, two of which are described as new. Of the known forms, 

 three* have been previously observed on single occasions only and 

 are species about which further information was desired ; the 

 other three are worms commonly reported from Zoological 

 Gardens ; yet even of these our knowledge is hj no means com- 

 plete, and I have theiefore added a short account of two of them 

 to my descriptions of the less known species. 



During recent years lenewed attempts have been made b\- 

 vai'ious authors, especially Eailliet and Henry, to break up the 

 old genus Filaria s. 1., and have residted in a much improved 

 knowledge of ma,ny of the commoner Filariids ; some of the older 

 generic names proposed by Yiborg, Diesing, etc., have been revived 

 and several new genera estalilished. In this paper, I have 

 attempted, wherever possi))le, to refer the worms described to 

 these new groupings. 



