ON PHYLLOUISTOMUM AMERICANUM (N. SP.) ; A 



NEW BLADDER DISTOME FROM AMBLY- 



STOMA PUNCTATUM. 



HENRY LESLIE OSBORN. 



PART I. 



The species of this genus which have been reported hitherto 

 have all come from the old world. P. folium Olf.,from Europe, 



'-sf 



'X 



FIG. I. Ventral view of /'. americunuui, camera lucida, X 3 2 diam. g-f>i'-, genital 

 pore; nt., uterus; /. c., Laurer's canal; v/., vitellaria ; V. def., vas deferens ; sp. f 

 anterior testis ; sp.", posterior testis ; ex., excretory bladder; int., intestine; ov. t 

 ovary ; Sk.gl., shell gland ; V.sm., seminal vesicle ; pr., prostate cells. 



and P. patcllare, Sturgis, '97, from Japan, have been till recently 

 the only species known ; during 1902, however, Odhner added 



252 



