SEA-FISHERIES LABORATORY. 83 



extremity is pointed and tke ovary is situated here ; it is a 

 bi-lobed structure tapering to a point at its posterior 

 margin. The oviduct and uterus were not well enough 

 seen in the single preparation available to be figured. 

 Probably they were insufficiently developed, and it is very 

 likely that complete maturation of the female organs takes 

 place in this, as in so many other tapeworms, after the 

 proglottis has dehisced from the strobila and is free in the 

 alimentary canal of the host. Perhaps there may have 

 been free proglottides in this particular fish, but they were 

 not identified. The vitellaria form two bands of follicles 

 distributed along the margins of the proglottis, and the 

 ducts pass off from their posterior extremities and run 

 obliquely backwards, joining to form a small yolk 

 reservoir. 



The testes are about 24 in number and lie mainly on 

 the lateral parts of the proglottis, but a few are distributed 

 in the median regions of the latter ; they are comparatively 

 large spherical bodies. The cirrus-pouch is very large and 

 is almost exactly median ; within it is a comparatively 

 long cirrus, armed Avith short, blunt, straight spines for 

 the most of its length. This is continuous with the 

 vesicula seminalis which lies coiled up in a compact mass 

 between the cirrus pouch and the anterior extremity of 

 the proglottis. 



The genital aperture is lateral and nearly half-wa}' 

 between the ends of the proglottis. There is a well-marked 

 vagina, which is dilated terminally. The duct passes back, 

 being coiled loosely towards the ovary. At its posterior 

 extremity it is dilated to form a small receptaculum 

 seminis, and from this a very narrow duct passes back- 

 wards towards the ovary. The junction of receptaculum 

 seminis, oviduct and vitelline ducts was not seen. 



