628 



with a large number of small hooks; genital pores unilateral; 

 hosts: Oriolus galbula, Picus viridis, ? P. major. 



Davainea circumcinota (Krabbe, 1869) R. Bl.. 1S'.»1. (1869, 

 Taenia circumcincta KraJbbe). Strobila 120mm long by 2mni 

 broad; rostellum armed with a double crown of about 300 hooks 

 11 fi to 12 fi long; suckers armed; genital pores ? ; eggs in egg 

 sacs; host: Ardea garzetta. 



Davainea leptosoma (Diesing, 1850) R. Bl., 1891. (1850, Taenia 

 leptosoma Diesing.) Strobila 160mm long by 2mm broad; ros- 

 tellum with a double (?) crown of hooks 11 ^ to 13 /* long; 

 hooks on suckers?; genital pores unilateral; host: Psittacus 

 erithacus.) 



B. Mammalian parasites 



Bavainea madagascariensis (Davaine, 1870) R. Bl.. 1891. (1869, 

 Taenia madagascariensis (Davaine), found in man. 



Davainea Salmon! Stiles, 1S95, found in Lepus sylvaticus and 

 Lepus melanotis. 



Davainea retractilis Stiles, 1895, found in Lepus arizonae. 



Davainea contorta Zschokke, 1895, found ni Manis pentadac- 

 tyla. 



Genus ECHINOCOTTLE R. Blancha'rd. 1891. 



Diagnosis: Body short and thin. Head elliptical or subspheri- 

 cal, provided with a long rostellum capable of being completely 

 retracted, and armed with a single row of 10 hooks; dorsal 

 root much longer than feeble ventral root. Suckers armed 

 with three series of hooks, whose prongs point posteriorly; one 

 series situated in the longitudinal axis of the sucker, one series 

 on the borders of each side. Type species, E. Rosseteri R. Bl., 

 1891. 



Development: Cysticercoid (Cercocystis) in the cavity of 

 Ostracodes. 



Hosts: Domestic ducks (Anas boschas dom.); Bengal ducks. 



26. ECHINOCOTTLE ROSSETERI, R. Blanchard. 1891. 



(1891, "Taenia lanceolata Goeze" of Rnsseter.) 



[PI. XIX. figs. 247-251.-| 



Diagnosis: Strobila (young specimens) 1.5mm long with 26 .seg- 

 ments present; breadth, 0.18mm. Head suibspherical. 85 /i to 155 



fi long by 75 ft to 105 ^ broad; rostellum long, with single crown 

 of 10 hooks on extremity, hooks measure 31 ^ to 38 /U long; 



suckers oblong. 67 ^ to 90 /i by 27 u to .^2 fi ; muscular wall 



