628 



with a hiise numbor of small hooks: genital pon-s unilateral; 

 lu>sts: OiloUis ealbula. I'icus virWls. ? P. major. 



Dnvalnea circumclncta (Krabbe. 1S69) R. Ul., 1S91. (1869. 

 Taenia clivumolncta KraJbbe). Stiobila liOno" long by S""'" 

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

 11 n to 12 /I Ions; suckers armed; irenital pores ? ; eggs in egg 

 sacs; host: Ardea srai-zetta. 



Davalnea lei>tosoma (Diesing, 1850) R. Bl., 1891. aSoO, Taenia 

 lepti»soma Diesing.) Strobila 160n>'» long by 2">m broad; ros- 

 tellum with a double (?) crown of hooks 11 fi to IS ft long: 

 hooks on suckers?; genital v^ores unilateral; host: Ps;ttacus 

 erithacus.) 



B. Mamnmtlan parasites 



Bavainea madas>»scnriensis (r>av»vine. ISTo) K. HI.. l:<;'i. um.;i. 

 Taenia madagascariensis (Davoine). found in man. 



Dava:nea Salmon! Stiles. lS9o. found in Lepus sylvaticus and 

 I.iepus melanotis. 



Davainea retractllls Stiles. 1895. found in l.,epus arizonae. 



Davainea contorta Zschokke. lS9i,>. found ni Manis pentadai^- 

 tyla. 



G«nus KCHINOCOTTLH R. Blanchard. 1S9I. 



Diagnosis: Bo^iy short and tliin. Head elliptical or subspheri- 

 oal, provided with a long rostellum capable of being completely 

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

 root mucli 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 boixlers of each side. Type species. E. Rosseteri R. Rl.. 

 1891. 



Development: Cysticercoid (Cercocystis) in the cavity of 

 Ostracoiles. 



Hosts: Domestic ducks (Anas boschas dom.V Bengal d\icks, 



!« ECHINOCOTTU! ROSSETERI. R. BiRnchard. 1S91. 



(1S91. "Taenia lanceolata Goeze" of Rosseter.l 

 [PI. XIX. figs. 247-261.1 

 Diagnosis: Strobila (young specimens) 1.5nin> long with 26 seg- 

 ments present; breadth. O.IS""". Head suibspherical. 85 /« to 155 

 H long by 75 n to 105 /< broad: rostellum long, with single ciMwn 

 of 10 hooks on extremity, hooks measuiv 31 ,« to 38 ,u long; 

 suckers oblong. 67 u to 90 ,« by 27 u to 32 u ; muscular wall 



