126 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxm. 



Plate XV. 



Monostomum vlnal-edivardsii Linton, ffom OcijuruR chri/surus. 

 Fig. 97. Dorsal view, balsam; length 2 mm. 



.[spidoga-^fer rivgens Linton, from Iridio radiatus. 



98. Dorsal view, balsam; length 2 nun. 



99. Ventral view of head and anterior portion of sucking disk, balsam; dia- 



meter of head 0.42 mm. 



Undetermined Trematode, allied to Pliyllodistomum, from Balistes carolinensis. 



100. Ventral view, life; diameter of body 0.93 mm.; d, disk. 



101. Same, stained and mounted in balsam. 



102. Portion of ventral disk highly magnified; distance between strite 0.015 mm. 



