DIPLOGONOPORUS GRANDIS 



221 



whither it was supposed to have been carried by Esquimaux dogs (Rosen- 

 kranz in Deutsch. med. Wchnschr., 1877, iii., p. 620). The parasite stated 

 y the author to be Dib. cordatus, is Tcenia pectinata, Goeze, which has been 

 known since 1766. 



Gen. 2. Diplogonoporus, Lonnbrg., 1892. 



Syn. : Krabbea, R. Blanch, 1894. The scolex is short and has powerful 

 uctorial grooves ; no neck ; the proglottides are short and broad ; there are 

 wo sets of genital organs side by side in each segment, which in all essentials 

 resemble the single one. of Dibothriocephalus. 



[The genera Diplogonoporus and Krabbea are distinct ; the 

 uterus opens dorsally in the former, ventrally in the latter. 

 F. V. T.] 



Diplogonoporus grandis, R. Blanch., 1894. 

 Syn. : Bothriocephalus, sp., Ijima et Kurimoto, 1894 ; Krabbea grandis, R. Bl. 



Scolex unknown ; chain of proglottides over 10 m. in length. 

 1*5 mm. broad in front, 2*5 mm. broad at the back. The pro- 

 glottides are very short (0-45 mm.), but broad. On either side 

 to the right and left of the worm, along the entire ventral sur- 



FIG. 147. A segment 

 of Diplogonoporus 

 grandis (natural size). 

 (After Kurimoto.) 



FIG. 148. Genitalia of Diplogonoporus grandis. Above 

 the cirrus pouch, to the left, vas delerens (dotted) ; 

 below, the vagina (light) ; the uterus (dark) ; ovary 

 (black). (After Kurimoto.) 150/1. 



face, there is a longitudinal groove ; these grooves are nearer to 

 each other than to the lateral margin ; . in them lie the genital 

 pores, and they are in the same sequence as in Dibothriocephalus ; 

 the ovary is only developed transversely ; the uterus only makes 

 a few loops. Eggs (fig. 129) thick-shelled, brown, 0-063 : 0-048 

 0*05 mm. This parasite has hitherto been observed twice in 

 Japanese. Similar species are known in cetacea and seals. 



