TYPES OF SPECIES OF CESTODA — KREFFT. 13 



from the Black Duck (Anns superciliosa, Gmel.), and the Teal 

 (Nettion castaneum, Eyton), which are therefore newly recorded 

 hosts for Diploposthe havis, Bloch. 



Taenia forsteri, Krefft. 



The description of Taenia forsteri, a parasite taken from the 

 stomach of a Dolphin (Delphinus forsteri, Gray 1), in Port Jackson, 

 as given by Krefft 8 8 is very scanty. Consequently Cohbold 29 

 suggested that this Cestode might belong to the species named 

 by Diesing 50 in 1850 as Tetrabothrinni triangulare from 

 DelpJiinorliynchus rostratus, Cuv. In 1892 Alonticelli 31 described 

 a tapeworm from Delphinus delphis, Linn., from the Bay of 

 Naples, which he referred to Krefft'a species as it agreed with 

 the latter in the few points mentioned by Krefft. He gave a 

 short account and figures of the anatomy making the species the 

 type of a new genus, Prosthecocotyh. In 1899 Fuhrmann 32 

 discussed this genus giving a resume of the known species, includ- 

 ing P. Jorsteri and /'. triangulare, the descriptions of these being 

 based on the original material of Monticelli and Diesing respec- 

 tively. In 1904 he gave a much fuller account 33 of these two 

 parasites. Liihe in 1899 showed that the Genus Prosihecocotyle 

 is synonymous with Tetrabothrius, Rud. 



From the above, it will be seen that some pronouncement in 

 regard to Tetrabothrius forsteri may be of use. Unfortunately 

 the type material has become dried up and is now useless for the 

 purpose of systematic study. Consequently I am able to give 

 only a few details, which will be supplemented by further 

 information derived from the descriptions of Monticelli and 

 Fuhrmann. 



The scolices have not been much affected by the drying, but 

 the attempt to follow out the anatomy of the segments was quite 

 unsuccessful. Thescolex is about 04r5 mm. in breadth, (028 mm. 

 in Fuhrmann), and bears four very prominent muscular suckers, 

 with a deep cup-like cavity and a rounded or oval opening 01 57 

 mm. in breadth by 019 mm in length. Each sucker is nearly 



3 s Krefft— Loc. cit. p. 218. 



29 Cobbold— Parasites— A Treatise on the Entozoa, 1879, p. 422. 



30 Diesing— Systema helminthum, i., 1850, p. 601. 



31 Monticelli— Boll. Mus. Zool. Anat. Comp. R. Univ. Torino, vii., 1892, 

 No. 27, pp. 6-8. 



33 Fuhrmann — Centr. Bakt. Orig. i., xxv., 1899, pp. 869-870. 

 33 Fuhrmann— Centr. Bakt. Orig. i., xxxv., 1904, pp. 744-752. 



