369] 



PSEUDOPHYLLIDEA FROM PISHES— COOPER 



81 



TRIAENOPHORINAE Liihe 1899 



Scolex armed or unarmed, always with two typical and not very deep 

 bothria, ahead of which the flattened termination of the scolex projects more 

 or less prominently in the form of a ring. External segmentation present or 

 absent, in the former case an mijointed neck being absent. Opening of cirrus 

 and vagina marginal, irregularly alternating; uterus opening surficial, ventral, 

 ahead of the marginal genital aperture. Genital apparatus always single 

 in each proglottis. No muscular bulb (Eschricht's body) on the inner end of 

 the cirrus-sac. Receptaculum seminis comparatively smaU, not always sharp- 

 ly separated from the narrow inner end of the vagina. Uterus a much coiled 

 canal, which while never forming a rosette is usually somewhat enlarged before 

 its opening. 



Sexually mature in the intestines of fishes and marine turtles; larval condi- 

 tions mostly unknown. 



Type genus: Triaenophorus Rudolphi. 



TRIAENOPHORUS Rudolphi 1793 



