102 PR0CEEDII*5-GS Or THE NATION AI^ MUSEUM vol.88 



Table 26. — Measurements of three specimens of Crepidostomum faronis in balsam, 



Measurement 



Length 



Breadth, level of oral sucker 



Breadth, level of ventral sucker 



Breadth, level of testes 



Anterior edge of ventral sucker to anterior end 



Posterior ed£;e of ventral sucker to ovary 



Posterior edge of ventral sucker to first testis_- 

 Posterior edge of second testis to posterior end. 



Oral sucker, length — 



Oral sucker, breadth 



Pharynx, length. 



Ventral sucker, length 



Ventral sucker, breadth 



Ovary, length.. _. 



Ovary, breadth 



First testis, length 



First testis, breadth 



Second testis, length 



Second testis, breadth 



3' 



Mm. 

 2.53 

 .24 

 .66 

 .82 

 .63 

 .07 

 .56 

 .56 

 .17 

 .24 

 .11 

 .28 

 .31 

 .24 

 .20 

 .22 

 .28 

 .28 

 .29 



• Ventral view. ' Lateral view. 



Family DIPLOPROCTODAEIDAE Ozaki, 1928 

 Genus BIANIUM Stunkard, 1930 



BIANIUM PLICITUM (Linton) 



Platk 6, Figure 57 ; Plate 7, Figures 58-64 



Distomum sp. Linton, Proc. U. S. Nat. Mus., vol. 20, pp. 537, 538, figs. 1, 2, 1898 ; 



Bull. U. S. Fish Comm. for 1899, vol. 19, p. 464, 1901 ; Bull. Bur. U. S. Fish 



Comm. for 1904, vol. 24, pp. 359, 385, 402, fig. 165, 1905. 

 Psilostomum plicitum Linton, Proc. U. S. Nat. Mus., vol. 73, art. 1, p. 5, fig. 7, 



1928. 

 Bianium concavum Stunkard, Anat. Rec, vol. 47, p. 362, 1930. 

 Bianium plicitum (Linton), Stunkard, Zeitschr. liir Parasitenk., vol. 3, pp. 715- 



719, figs. 3-7, 1931. 



Body oblong, anterior end, when flattened, with margins of neck 

 slightly expanded and more or less undulate ; neck and anterior part 

 of body densely covered with minute spines ; oral sucker a little larger 

 than ventral sucker, its oj^ening ventral, its anterior border a short 

 distance back of the anterior end of the body; pharynx variable, 

 usually broader than long, its anterior border in some cases scal- 

 loped; prepharynx and esophagus short; intestinal rami extend to 

 posterior end of body, where they open by distinct ani at the postero- 

 lateral margins.'^^ Genital pore at left anterior edge of ventral 



"Dr. Stunkard has called my attention to the presence of two distinct anal openings in 

 this distome. I had overlooked this unique character, possibly because the specimens 

 examined most closely had the intestinal rami hidden by the vitellaria, but probably 

 because the attention that would be required to lead to such an unlooked-for characteristic 

 was not given. 



