10 PROCEEDINGS OE THE NATIONAL MUSEUM vol.81 



Description. — Campula: Body flat, 14 mm long by 2 mm wide, 

 slightly attenuated at the extremities. Cuticle covered with small 

 slender spines. Suckers about equal in size; acetabulum 700/x in 

 diameter, oral sucker slightly smaller; distance between suckers 7 

 mm. Prepharynx short and wide; pharynx piriform in shape, TOO/x 

 long by 400/x wide; esophagus very short; intestine with short, an- 

 teriorly directed ceca, one on each side, which extend to the level 

 of the oral sucker, and long posterior ceca, which extend to the pos- 

 terior end of the body. The anterior ceca are provided with three 

 more or less well-developed lateral diverticula, and the posterior 

 ceca are provided with short diverticula throughout their course, 

 especially along their lateral margins. Genital aperture median, situ- 

 ated a short distance cephalad of acetabulum ; cirrus pouch short and 

 wide, containing the seminal vesicle, short prostatic canal, and a poor- 

 ly developed ejaculatory duct, and situated entirely in front of ace- 

 tabulum. Testes large, ovoid, tandem in position, and situated in an- 

 terior part of the posterior third of body. Ovary small, spherical, 

 situated cephalad of anterior testis and to the right of median line ; 

 Mehlis's gland well developed, to left of ovary ; Laurer's canal pres- 

 ent. Vitellaria well developed and occupying almost the entire sur- 

 face of body, both dorsally and ventrally; they are composed of 

 tubular glands entangled to form a compact network; the vitelline 

 ducts unite cephalad of the genital aperture and caudad of posterior 

 testis, and also between ovary and anterior testis where they form 

 the vitelline reservoir. Uterus sinuous, situated between Mehlis's 

 gland and genital aperture. Eggs elliptical, 60/i, long by 45/i, wide, 

 slightly pointed posteriorly. 



Host. — Delphinus delphis. 



Location. — Liver (bile ducts). 



Distribution. — Europe. 



Remarks. — Odhner (1905) was of the opinion that this species was 

 probably identical with Brachycladium palUatum Looss { = Cain- 

 pula palliata) , since he stated : " Ich bin nlimlich nicht vollig iiber- 

 zeugt, dass Br. delphini nicht mit dem demselben Wirte entstam- 

 menden Br. palUatum am Ende zusammenfallen konnte. Die Differ- 

 enze in der Form der Hoden diirfte fiir das Auseinanderhalten der 

 beiden Arten kaum geniigen." Odhner's point regarding the form 

 of the testes is well taken, but there are other characters which 

 appear definitely to eliminate the likelihood of the two species being 

 identical. In Campula palliata the uterus forms a rosette mass of 

 coils dorsal to the acetabulum, the egg does not show a definite polar 

 prolongation or thickening, and the anterior and posterior vitelline 

 ducts do not anastomose. In C. delphini the uterus lies caudad of 

 the acetabulum, the egg shows a marked polar thickening or pro- 

 longation, and the vitelline ducts anastomose anterior to the genital 



