SPARGANUM 



317 



to the lateral margin ; in them, lie the genital pores, and they are in 

 the same sequence as in Dibothriocephalus ; corresponding to the 

 scanty length (0*45 mm.) of the proglottids, the ovary is only developed 

 transversely ; the uterus only makes a few loops. Eggs (fig. 195) 

 thick shelled, brown, 63 p by 48 p to 50 /*. This parasite has hitherto 

 been observed twice in Japanese. Similar species are known in Cetacea 

 and seals. 



FIG. 211. Diplogonoponts grandis, Liihe, 1899: ventral view of a portion of the 

 strobila, showing two rows of genital pores and partially extruded cirri. (After Ijima and 

 Kurimoto.) 



FIG. 212. Diplogonoporus grandis : ventral view (diagrammatic) of genitalia 

 of left side ; >, cirrus ; c tr.o, cirrus opening ; dig., vitelline duct ; ov. , ovary ; 

 ovd,, oviduct ; sb. t receptaculum seminis ; #/., uterus; ut.o., uteiine pore ; vag. y 

 vagina; vag.o., vaginal pore; vd, vas deferens. X 150. (After Ijima and 

 Kurimoto.) 



Sparganum, Diesing, 1854. 



The term Sparganum, invented by Diesing, is used as a group name 

 of larval bothriocephalid Cestodes whose development is not suffi- 

 ciently advanced to enable them to be assigned to any particular genus. 



Sparganum mansoni, Cobb., 1883. 



Syn. : Ligula mansoni, Cobbold, 1883; Bothriocephalus linguloides, R. Lkt., 

 1886 ; Bothriocephalus mansoni, R. Blanch., 1886. 



These plerocercoids were discovered in 1882 by P. Manson 

 during the post-mortem on a Chinaman who had died in Amoy, 



