628 



MR. F. E. BEDDARD ON 



opinion will also be given later, after I have detailed the 

 characteristics of these worms. 



As is the case with other species of Oochoristica, the scolex of 

 the present species is entirely unarmed and without rostellum. 

 I have studied this and other regions of the body not only by 

 inspection with a lens and the microscope of specimens in spirit 

 iriounted entire in Canada balsam, but also by means of transverse 

 and longitudinal sections. I find that the rostellum is not 

 represented by the smallest vestige that can be recognised. The 

 anterior end of the head or scolex is simply slightly and uni- 

 formly convex, the convexity representing a large cii'cle and, there- 

 foi'e, not to be desciibed as a papilla. The suckei's appeal- to stand 

 out rather fi'om the scolex, and are somewhat long in shape with 

 a narrow and slit-like orifice. 



The general aspect of the scolex itself does not recall that of 

 such other membeis of the genus Oochoristica as have been 



Text-fis. 149. 



Scolex and a few anterior proglottides of Oochoristica sp. 



figured, excepting in its tetragonal form in section. It is, more- 

 ovei', rather unlike that of other Tetracotylea. When viewed 

 superficially with a lens, or under a low power of the microscope, 



