U. S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 88 PLATE 24 



320. 



318. Wedlia bipartita (Wedl) from Thunnus secundodorsalis: Heads of specimens shown 



in fig. 317, enlarged. 



319. Tetracotyle communis Hughes from Stizostedion vitreum: Longitudinal section. 

 320-323. Neascus cuticola (Xordmann): 320, Ventral view, life, posterior end reflected 



dorsad; 321, specimen removed from cyst and straightened, life; 322, larva 

 escaping from cyst, life; 323, cyst surrounded by pigment, section. (320 from 

 Salvelinus fontinalis, 321-323 horn Micropterus dolomieu.) 

 324-330. Pleorchis americanus Liihe from Cynoscion regalis: 32 J-, Frontal section, region of 

 ovary; 325, sagittal section, region of ovary; 326, cross section at level of genital 

 pore; 327, cross section near level of anterior edge of ovary; 328, fifth section in 

 series back of fig. 327; 329, fifth section in series back of fig. 328; 330, section from 

 series a few sections back of fig. 329. 

 331. Gargorchis varians, new genus and species, from Ceratacanthus schoepfi: Ventral 

 view. 



