383] 



PSEUDOPHYLLIDEA FROM FISHES— COOPER 



95 



The above diagnosis lacks the words "seldom armed" after "scolex" 

 which appear in Llihe's latest (1910:24) characterization not only of this 

 subfamily but of the family, because they do not appear in his earlier papers, 

 (1899:41 and 1902a :336, respectively) nor does there seem to the writer to be 

 any occasion for their use. 



BOTHRIOCEPHALUS Rud. 1808, e. p. Liihe 1899, e. p. 



Scolex elongated, with two only weakly developed sucking grooves. Ex- 

 ternal segmentation well developed ; between two consecutive genital segments 

 there is always present a saw-tooth notching of the lateral border, yet a corres- 

 ponding transverse furrow on both surfaces is sometimes lacking. Vitelline 

 follicles in the cortical parenchyma, continuous from proglottis to proglottis, 

 as are the testes. Receptaculum seminis absent. Beginning of the uterus 

 a winding canal (uterine duct) which opens into a large nearly spherical cavity 

 (uterus-sac or uterus s. str.). Uterus opening approximately median, as is 

 the dorsal genital opening. 



Type species: Bothriocephalus scorpii (Miiller 1776) 



