Genus DRBPANIDOTAENIA Rallllct, 1892. 



Diagnosis: Head provided with a single row o£ uniform liool<s. 

 few (8-20) in number, with dorsal root much longer than ventral 

 root, the latter 'always small; with prong directed posteriorly 

 when the rostellum contracts. Type species Dr. lanceolata 

 (Bloch, 1782) Railliet 1892. 



Development: The larval stage (cystloerrodd) of several 

 species has boon found in small crustaceans. 



( Genital pores alternate: rostellum 



I with 16-20 hooks 20-27 f long; 

 1.^ Hab: chleltens, ? pheasants. 



I ? ducks, pigeons Dr. infundibuiiformis, p. 609 



(. Genital pores unilateral 2 



„ i Rostellum with 10 hooks 3 



^- } Rostellum with 8 hooks 4 



I Hooks 20 // to 23 fi long; found In 

 ducks, domestic goose, and wild 

 goosander Dr. tenuirostrls, p. 60S 

 Hooks 35 /* to 40 yu long; found in geese.. Dr. setigera. p. 605 

 Hooks 51 ^ to 61 /I long; found in geese... Dr. sinuosa, p. 604 

 Hooks 65 ft to 72 /i long; found in ducks.. Dr. anatina, p. 601 



f Hooks 31 /I to 35 /« long; found in ducks 



I and geese Dr. lanceolata, p. 597 



4- \ Hooks .W /i long; found in geese Dr. fasclata. p. 598 



Hooks 77 fito SO « long; found in ducks 

 •■ and geese Dr. gracilis, p. Wn 



A. Genital Dore unilateral. 



a. Rcstellum with 8 hooks. 

 10. DRBPANIDOTAENIA LANCEOLATA (Bloch. IT82) RallUet. 1892. ThP 



lanceolate tapeworm. 

 (1727. Taenia anserum Frisch-vide Rud.. 1810; 1781. T. aeutis- 

 slma Pallas, pars— vide Krabbe, 1869; 1779, T. anservis Bloch 

 —vide Rud., 1810; 1782, T. lanceolata Bloch; 1786, T. lanceola 

 Batsch— vide Rud., 1810; 1803, Halysis lanceolata (Bloch, 1782) 

 Zeder— vide Rud., 1810; 1858. Hymenolepis (Dilepis) lanceolata 

 (Bloch. 1782) Weinland.) 



[PI. IV, Figs. 43-53; PI. V, Pigs. 54-55.1 

 Diagnosis: 30mm to 130mm long by 5mm to 18mm broad. Head 

 very small, globular; rostellum cylindrical, slightly swollen on 

 the summit, armed with a single crown of 8 hooks 31 /* to 35 ^ 

 long; suckers rounded. Neck very short, can be retracted with 

 the head into the anterior portion r>f the strobila. Anterior 

 segments very short, the following segments increasing slightly 



