No. 2322. TREMATODE FAMILY HETEROPHYIDAE— RANSOM. 



549 



tal sucker about 55 |jl in transverse diameter. Testes irregularly oval, 

 with indentations on their posterior border ; right testis obliquely be- 

 hind the left. Seminal vesicle voluminuos, extending back as far as 



-/7?. 



16 



17 



19 



Figs. 1&-19. 16.— Cryptocotyle jejuna. Contracted specdien. Ventral a^ew. x 49. After 

 NicoLL, 1909. 17.— Cryptocotyle jejuna. Elongated specimen. Ventral view, x 49. After 

 NicoLL, 1909. 18.— Paracoenogonimus ovatus. Ventral view of immature worm from mouse. 

 X 188. After Katsurada, 1914. 19.— Paracoenogonimus ovatus. Encysted cercaria from 

 FISH. X 27. After Katsurada, 1914. [For explanation of lettering see footnote, p. 532.] 



anterior testis, highly convoluted. Prostatic portion of vas deferens 

 well developed, forming a pear-shaped body enclosed by a distinct 

 membrane. Ovar3^ small, roughly oval, lobed, a short distance in 



