24 PROCEEDINGS OF THE NATIONAL MUSEUM vol.81 



tica and seminal vesicle always distinct. Testes opposite each 

 other, equatorial or postequatorial. Ovary usually lobed, dextral, 

 pretesticular ; seminal receptacle and Laurer's canal present. Vitel- 

 iaria usually well developed, exclusively or mostly dorsal, leaving 

 only the median dorsal area of body unoccupied. Uterus either 

 very long, with relatively few loops, or shorter and more convoluted. 

 Parasites of carnivorous mammals and birds, usually occurring in 

 pairs in cystlike cavities. 



Type genus. — Troglotreiiia Odhner, 1914. 



Genus PHOLETER Odhner, 1914 



Generic diagnosis. — Troglotrematidae : Body more or less spindle 

 shaped. Cuticle armed with small pointed spines, the spines not in 

 groups. Excretory vesicle Y shaped, the bifurcation occurring in 

 front of testes, and branches extending to acetabulum. Genital 

 aperture at anterior border of acetabulum, slightly to left of median 

 line ; genital sinus moderately deep and wide ; cirrus pouch absent ; 

 pars prostatica short, directed dorsoventrally ; seminal vesicle tube- 

 like, undivided, extending under the dorsal surface to near the ovary. 

 Testes elliptical, situated opposite each other a short distance from 

 the posterior end of body. Ovary deeply lobed; seminal receptacle 

 present; Laurer's canal moderately long. Vitellaria strongly de- 

 veloped, dorsal in position, and having a tendency to occur in grape- 

 like bunches. Uterus long and convoluted, occupying entire body 

 width and extending from ovary to genital pore. Parasites of 

 cetaceans. 



Type species. — Pholeter gastrophilus (Kossack, 1910) Odhner, 

 1914. 



PHOLETER GASTROPHILUS (Kossack, 1910) Odhner, 1914 



Plate 7, Figure 26 



Synonym. — Distomuni gastrophiluni Kossack, 1910, pp. 118-120. 



Description. — Pholeter : Body spindle shaped, 1.5 mm to 3.33 mm 

 long by 1.7 mm to 2.1 mm wide according to Odhner (1914), or 

 3.15 mm to 3.66 mm long by 1.8 mm to 2.25 mm wide according to 

 Kossack (1910), the thickness being about one-third of the width. 

 Oral sucker l70/x to 200/a in diameter; acetabulum 250/i to 300/a in 

 diameter, situated about one-third of the body length from the ante- 

 rior end. Pharynx 150/x to 170;u, in diameter; esophagus of same 

 length as pharynx ; intestinal ceca simple and terminating about the 

 middle of testes. Genital pore situated at the anterior margin of 

 acetabulum; cirrus pouch absent; pars prostatica short and directed 



