Bull. U. S. F. C. 1 899. (To face page 492.) 
Plate XXVIII. 
310. Distomum tornatum Rudolphi, from Mcnidia notaia; lateral view; 
from life, x 3. 
311. Distomum sp. from Menticirriis saxatilis; ventral view; life. 
a. Ventral sucker; c, cirrus; cp, cirrus pouch; r/, genital aper- 
ture; i , intestine; o, ovary; /, testes; u, uterus; vg , vitelline 
glands, x 40. 
312. Distomum appen die ulcitum Rudolphi, from Dccaplerus macnrdlus; 
adult, ventral view, cx, Excretory vessel; u,„ uterus. Other 
letters as in fig. 311. x 46. 
313. Young, ventral view. Letters as in figs. 311, 312. x 46. 
314. Testes, ovary, and vitellaria of young. Letters as in fig. 311. 
X 220. 
Note. — The vitellaria, which are deeply lobed in the young, 
appear to lose this character in the adult. 
315. Distomum r/ulosum sp. nov. from Rhombus trinranthus; lateral 
view, x 18. ph, The long, cylindrical pharynx. Other let- 
ters as in figs. 311, 312. 
316. Middle of body of same, x 65. pr, Prostate gland. Other let- 
ters as in figs. 311, 312. 
317. Transverse section ol' body through ovary, x 65. Letters as in 
figs. 311, 312. 
318. Eye of Tautoga onitis , distomes encysted in cornea, x 2. 
