T^NIAD^. 115 



a. Ovum in all stages. \ 



h. Six-hooked embryo = boring larva J 



(T.S.O.)^2"'osco/ea'(YaiiBeneden) f 



c. Besting larva (T.S.O.)=C;f/sfoWc«s rP™*°^°°i'^ (Huxley). 



Zoological Individual </ piriformis =scokx (Van Beneden) \ 



d. Immature tapeworm in all stages. / 



e. Tmnia serrata =; sexually mature tapeworm colony 

 = strobila. 



f. Proglottis = free-joint or segment = deutero-zooid 

 (Huxley). 



Genera. — Tcenia, Linneus ; = Alyselminthus, Zeder ; = Halysis, 

 Zeder ; = Bhytelminthus, Olfers ; = Thysanosoma, Diesing ; = (in 

 the larval state) Gysticercus, RudolpH ; = Hydra, Linneus ; = 

 Vesicara, Sckrank ; = Hydatigena, Groeze ; = Hydatula, Viborg ; 

 = Hydatis, Lamarck ; = Finna, Werner ; = Piestocystis, Diesing ; 

 ^^ Goenurus, Rudolphi; ^=^ Polycephalus, Zeder; = Echinococcus, 

 EudolpM; SciadocepJialus, Diesing; Ephedrocephalus, Diesing; 

 Amphoteromorphus, Diesing ; Peltidocotyle, Diesing ; Garyophyllceus, 

 Grmelin ; = PhylUne, Abildgaard ; = Garyophyllinus, Schrank ; 

 Diplacanthus, Weinland ; Acanthotrias, Weinland ; Hymenolopis, 

 Weinland; Tceniarhynchus, Weinland; Echinococcifer, Weinland; 

 Proteocepha.lus, Weinland; Dipylidium, Leuckart. 



