NEW MAMMALIAN TAPEWORMS, 1007 



are absolutely crammed with apparently mature (certainly very 

 nearly mature) testes. The ducts showed no signs of specialisation. 

 The vas deferens only expanded slightly and gradually into the 

 elongated terminal sac, which is so much specialised in the mature 

 segments to be described later. This immature condition of the 

 ducts persisted for only six segments. Thereafter the cu-rus sacs 

 were nearly or quite fully developed. In these anterior segments 

 the ovaries were not so forward in development as the testes. 



Text-fig. 210. 



Anoplotmi'ia dast/uri, longitudinal section of proglottid. A., shell-gland; Ow., ovaiy, 

 below which is seen the cirrus sac ; T., testes'; 77., uterus, between which and the 

 cirrus sac are seen the coils of the vas deferens cut transversely; W., transverse 

 excretory tube. The posterior part of the proglottid is above. 



The ovaries of Anoplotcejiia dasyuri lie posteriorly in the 

 segment but anteriorly to the vitelline glands, and when fully 

 developed are large and distinctly double. They have the very 

 common bushy form and occupy a good deal of the posterior 

 region of the segment. I did not observe the ovaries to be fully 

 developed until the first segment, in which the cirrus sac is also 

 fully developed and in which the uterus has begun to appear. 

 When the uterus has become so far developed as to fill the greater 

 part of the proglottid, the ovaries quite distinctly lie in continuity 

 with the masses of not fully mature eggs which here fill up the 

 chambers of the uterus. 



The vitelline glands are quite evident close to the posterior 

 border of the proglottid ; they do not extend out so far laterally 

 as do the ovaries. 



The vagina of this worm is, as is so usual in the group, a quite 

 straight tube for the greater part of its extent, that is to say it 

 is not coiled. It lies behind the cirrus sac and opens into the 



