(184S, Taenia bit'aria von Siebold; 1871, T. tuberculata Kreftl 

 (nee Rudolphi, 1819).) 



(PI. IT, figs. 12-17.) 



Diagnosis: Strobila 39mni to 90mm long by (?) broad. Head 

 triangular, with conical, pointed, (?) unarmed rostellum and 

 4 small unarmed circular suckers; neck short. Proximal seg- 

 ments small, narrow, gradually enlarged, and rectangular; 

 distal segments the largest, subquadrate. Genital pores double, 

 one each side in about the middle of the margin, prominent in 

 sexually active segments. Male organs: Testicles few in num- 

 ber; each vas deferens inflated into a vesicula seminalis near 

 the anterior margin of the segment, somewhat laterally of the 

 median line; from here the seminal canal runs diagonally to 

 the sirrus pouch, which is large; cirrus covered with minute 

 spines. Female organs: Not well understood; evidently 2 ovar- 

 ies present in the posterior portion of the segment, one each 

 side of the median line. 



Life history: Unknown. 



Type specimen: Collection Siebold in British Museum. 



Hosts: African Teal (Aythya nyroca), by von Siebold; White- 

 eyed duck, A. australis (Gould), by Krefft. 



Geographical distribution: by vnn Siebold; Aus- 

 tralia, by Krefft. 



Von Siebold (1848, p. 147) mentions Taenia bifaria from the 

 intestine of Anas leucophthalmos (=Aythya nyroca). The 

 specimens possessed double genital pores similar to D. caninum. 

 Monticelli (1889, p. 325) examined these specimens, preserved 

 in the British Museum, and gave a short diagnosis. In another 

 paper (1891. pp. 151-153) he gives a more extended description, 

 together with figures. He did not observe hooks on the head 

 but will not deny their presence. Monticelli sitates that Krefffs 

 species "T. tubercolata" (=T. tuberculata). described from 

 Aythya australis (Gould), is identical with T. bifaria. Diamare 

 (1893. p. 1-) I'laces T. bifaria in the genus Cotugnia. 



Genus AMABILIA Diamare. 1893. (Gen. Inq.). 



Diagnosis: Avian cestode with double lateral genital pores; 

 double cirri; ovary single and medium. Type species: Amabilia 

 lamelligera (Owen, 1835) Diamare, 1893. 



