rYPES OF SPECIES OP CESTODA. — frltt ' il^'lS "^ 3 



employed by Pallas in 1760, and by Diesing in 1850; (3) T. 

 coronala, used by Creplin in 1829 ; (4) T. paradoxa preoccupied 

 through having been erected by Rudolphi in 1801 ; and (5) 

 T. luberculala also preoccupied by Rudolphi (1819). I have 

 already ventured to rename the first as T.krefftii", tlie second 

 as T. hedleyi 3 , and the third as T. australiensis* . The fourth 

 appears very like his T. novas-hollandice from the same host and 

 consequently I have not thought it advisable to rename it until 

 the specimens shall have been more carefully studied. In 

 regard to T. tuberculata, the similarity to Diploposthe Itevis, 

 Bloch, was sufficiently close to justify a further and more de- 

 tailed examination of Krefft's species before altering its name. 

 As will be seen later, T. tuberculata is synonymous with D. 

 Icevis. T. austral iensis is a typical member of the genus 

 Gyrocozlia, T. hedleyi belonging to the allied genus Acoleus. 

 Tcenia pediformis, Krefft, is a Fimbriaria and moreover is syn- 

 onymous with F. fasciolaris, Pall., more commonly known as 

 Tatnia malleus, Goeze. T. Jorsteri is a Tetrabothrius, while 

 T. chlamyderce (T. chlamydoderce) belongs to the genus Choan- 

 otamia, and T. Jlavescens to Diorchis. Both T. bairdii and T. 

 cyliudrica are species of Hymenolepis, the former being synony- 

 mous with H. sinuosa, Zeder, i.e. H. collaris, Batsch, while 

 the latter is synonymous with H. megalops, Nitzsch. The types 

 and only specimens of two of his forms have been lost and 

 consequently these two species, T. moschata from the Musk 

 Duck (Biziura lobata), and T. phalangisUe from the common 

 Opossum (Trichosurns vulpecida), need not be any longer taken 

 into account in Parasitology, as they are not recognisable from 

 his descriptions. Both T. master.sii and T. krefftii belong to the 

 Anoplocephalidse. Fuhrmann has suggested that Krefft's T 

 novte-hollandice may be a Dioicocestus, but this suggestion is 

 based mainly on the fact that the host is a Podicipes. 



From the foregoing remarks it will be seen that most of the 

 species have been more or less examined. The most interesting 

 forms are T. coronata ( = Gyroccelia australieusis), T. rugosa 

 ( — Acoleus hedleyi) and T. tuberculata ( = Diploposthe tcevis). The 

 first two belong to the Acoleidre, a family characterised by the 

 absence of a vagina and by the possession of a highly specialised 

 musculature in the parenchyma, while the last possesses single 

 genitalia, but doubled genital ducts and a characteristic arrange- 

 ment of the body-musculature. 



» Johnston— Proc. Linn. Soc. N. S. Wales, xxxiv., 1909, pp. 518-9. 

 3 Johnston — Journ. Roy. Soc. N. S. Wales, xliv., 1910, p. 94. 

 * Johnston— Jonrn. Roy. Soc. N. S. Wales, xliv., 1910, p. 95. 



