HETEROPHYES 



Saline aperients cause the expulsion of some worms, 

 but thymol in addition is required for the expulsion of 

 the majority. 



T. 



FIG. 16. Heterophyes heterophyes (v. Sieb.). 53/1. Cg^ cerebral 

 ganglion; 7., intestinal branches; Ctg.> cuticular glands; Vsc.^ vitelline 

 sacs.; G.c., genital cup; 7"., testes the excretory bladder between them; 

 Lc, Laurer's canal ; Rs., receptaculum seminis, with the ovarium in front 

 of it; Ut.. uterus; Vs., vesicula seminalis. On the left side above, an egg, 

 700/1, is depicted, and below it three chitinous rodlets from the genital cup, 

 700/1. (After Looss.) 



Yokogawa yokogawa, a small fluke ri to 1*14 long and 

 42 to *7 mm. in breadth, widely distributed amongst the 

 inhabitants of Japan, Korea, and Formosa. It is also 

 found in dogs. The parasite resembles Heterophyes, but 

 there is no ventral sucker, and the disc round the genital 



