TYPES OF SPECIES OF CESTODA KKEFFf. 23 



Dujardin 49 , Diesing 50 , Krabbe 61 , Stiles 52 , Kowalewski 53 , 

 and Cohn 54 , who have dealt with the parasite. It is therefoie 

 of considerable interest that the distribution of this Cestode 

 which is known to infest at least eight species of Anseriform 

 birds 55 ranging mainly over the Northern Hemisphere should 

 now be widely increased by the addition of two other hosts, viz. 

 Anas superciliosa, Gmel., and Nettion castaneum, Eyton. from 

 the Australian region. We may therefore expect to find the 

 larval or cercocvstis stage in some of our local freshwater 

 Crustacea. Certain species of Gamma ras and Cyclops urn known 

 as its intermediate hosts 50 in Europe. 



T/ENIA RUGOSA, Kiefft. 



[From the White-headed Stilt, (Iliviantopus 

 leucocepha'us, Gould).] 



(Plate iv.) 



Kiefft's account of this parasite may be disregarded, and his 

 type specimens, or rather fragments, are now dried and therefore 

 of no use for anatomical purposes. However, T have been able 

 to compare some fresh material collected from this host in South 

 Australia by Dr. J. B. Cleland, with Krefft's original specimens 

 and with his description, with the result that I believe the 

 two forms belong to the same species. It was the armature of 

 the cirrus sac which assisted me in establishing the identity. 

 A cursory examination of the South Australian worm was 

 sufficient to allow me to place the parasite in the familv 

 Acoleidse, and to remark that it probably belonged to the genus 



4 9 Dujardin— Hist. Nat. Helm., 1S45, p. 573. 



6° Diesing- Syst. Helm., i., 18f0. p. 542. 



51 Krabbe— Bidrag., etc., 1869, pp. 298-9. 



« Stiles— Bull. Bur. Animal Industry, Dept. Agr. U.S.A., 12, 189t>, 

 pp. 40 41. 



58 Kowalewski — Bull. Acad. S'ci. Oacovie, CI. Sci. Math. Nat., \xix , 

 1895, pp. 349 367. 



si Cohn — Nova Acta, lxxix., 1901, pp. 323-5. 



5:5 For list see Puhrmann— Loc. cit., pp. 149-155 ; Ransom — Bull. Bur. 

 Animal Industry, Dept. Agr. U.S.A., 66, lt03, p. 92 ; Stiles— Loc. cit., 

 p. 40. 



5fi Stiles— Loc. cit., pp. 40-1 ; Hamann — len. Zeitschr. Naturwiss., xxiv., 

 1S8S), pp. 1-7 ; Mrazek, quoted Stiles, Loc. cit., p. 41. 



