59 
Medical significance. — An accidental parasite in man; onty one 
case has been recorded. 
Fig. 98. — Transverse section of segment of II. lanccolata: c. p., cirrus pouch ex. can., excretory canals; 
l. n., lateral longitudinal nerves; ov., ovary; rec. sem., receptaculum seminis; t., testis; id., uterus; 
vag., vagina; v. def., vas deferens; v. ef., vas efferens; ves. sem. ex., vesicula seminalis externa; ves. 
sem. int., vesicula seminalis interna: y. g., yolk gland. Enlarged. (After Wolffhuegel, 1900b, 51, 
fig. 2.) 
Fig. 99. — Egg of II. lanccolata. Enlarged. (After Railliet, 1886, 267, fig. 163b.) 
Fig. 100. — Supposed cystic stage of II. Icinceolata. Enlarged. (After Dadai, 1900a, pi. 10, fig. 9.) 
