280 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



the figures given by Linton for the distomid identified by 

 him as Molin's D. ocreatum. 



The testes are small, rounded bodies situated one on 

 each side of the ventral sucker, and fairly remote from 

 the ovary. The vasa efferentia curve round to one side of 

 the ventral sucker, and enter the bursa of the cirrus, 

 which lies entirely in front of the sucker, but almost in 

 contact with the latter. The uterus opens externally 

 very near to the male genital aperture, and apparently 

 into a common genital cloaca. Round the extremity of 

 the bursa and the cirrus is a prostate gland, which, 

 however, is not a very prominent structure. The 

 armature of the cirrus itself could not satisfactorily be 

 made out. 



The above characters are mostly those of Distomum 

 ocreatum, Molin, and I think these specimens may safely 

 be referred to this species. 

 Distomum appendiculatum, Rudolphi. 



From stomach of whiting (Gadus merlangus), Shoals, 

 March, 1906. 



One specimen of an appendiculate distome was found 



in the stomach of a whiting, along with some other 



specimens of a distomid not yet identified. The species 



is probably D. appendiculatum, but the diagnostic 



characters of the distomids with a retractile appendix are 



rather confused, and it may be worth while to give a 



description of the present form. The measurements 



are: — 



Length : 5 mm. 



Width : 1 mm. 



Diameter of oral sucker: 0*17 mm. 



Diameter of ventral sucker : 0'4 mm. 



Ova : 0-02 x 0'01 mm. 



Fig. 14 represents the animal with the appendix 



