Jobnson ifiint) 



NEWDIGENETTC TREM.VTODES FROM MARINE FISHES 

 By EMMETT W. PRICE 



Zoological D'rcision, Bureau of Animal Industry, US. Deparlmeni oi 



Agriculture 



(With One Plate) 



This paper contains descriptions of five digenetic treniatodes that 

 are regarded as new. These trematodes were collected by the writer 

 from fishes taken during the months of February and March, 1933. 

 in the vicinity of Puerto Rico, by the Johnson-Smithsonian Deep-Sea 

 Expedition. Inasmuch as the descriptions of these flukes are pre- 

 liminary in nature, no attempt has been made in most instances to 

 dififerentiate them from all of the species in the genera to which they 

 have been allocated, but only from those to which they are most 

 closely related. A more complete discussion of these forms and their 

 relationships will be given in a later paper. 



The writer is indebted to Dr. George S. Myers, assistant curator 

 of fishes. United States National Museum, for the determinations 

 of the fish hosts. The fishes referred to as hosts without a specific 

 name are apparently new and will be described by Dr. Myers in the 

 near future. 



Family FELLODISTOMIDAE 

 Subfamily FELLODISTOMINAE 



STERINGOTREMA OVATA, n. sp. 



Plate I, fig. I 



Description. — Body oval, 500 n long by 300 /x wide, flat and trans- 

 parent. Cuticula very delicate, without spines. Oral sucker sub- 

 terminal, 140 fj. in diameter ; acetabulum weakly muscular, 50 fi long 

 by 68 fi. wide, slightly preequatorial. Prepharynx absent; pharynx 

 40 // long by 36 JUL wide ; esophagus apparently absent ; intestinal ceca 

 relatively wide, extending to about 120 fji from posterior end of body. 

 Excretory aperture terminal ; excretory vesicle almost V-shaped, its 

 branches extending to near level of pharynx. Genital aperture at 



Smithsonian Miscellaneous Collections. Vol. 91, No. 7 



