U. S. NATIONAL MUSEUM 



285 



PROCEEDINGS, VOL. 



PLATE 22 



285-287. Deropristis hispida (Abilgaard) from Acipenser sturio: 285, Ventrolateral view of 

 head; 286, another, distorted; 287, ovum. 



288. Podocotyle sp. from Oncorhynchus tschawytscha: Broken specimen. 



289. Crepidostomwn faronis (Miiller) from Salvelinus fontinalis: Ventral \iew. 

 290,291. Bunodera nodulosa (Froelich) from Perca flavesceyis: 290, Ventrolateral view of 



anterior end, formalin; 291, ovum. 

 292-297. Azygia longa (Leidy): 292, Sagittal section; 293, frontal section of cirrus pouch; 



294, cross section, middle of length; 295, sagittal section, region of cirrus pouch; 



296, frontal section, cirrus pouch and metraterm; 297, frontal section, region 



of testes. (292-294 from Esox niger, 295 and 296 from Trichiurus lepturus, 297 



from Micropterus dolomieu.) 

 298,299. Geiiarches miilleri (Levinsen) from Cyclopterus lumpus: 298, Ventral view; 299, 



ovum. 



