I. [KEDA: ox a new echiusroid. 

 Explanation of the Plate. 



Ventral view of the female. [Nat. size). 



Terminal portion of the rectum (r/) with anal glands ; in situ. 

 av, antero-ventral main-canal of the analglands ; f.vi, fixing 

 muscles of the rectum and anal glands ; ml, mid-lateral 

 main-canal of anal glands ; ov, ovary on the ventral 

 vessel ; pd, postero-dorsal main-canal of anal glands ; 

 rd, rectal diverticulum from which the three main-canals of 

 anal glands arise separately. ( )n the right hand side 

 only the tertiary branches of the anal glands arc represented, 

 x 1.5. 



Fig. 3. — Terminal portion of a main-canal (postero-dorsal) of anal 

 glands, which corresponds to a tertiary branch. Some of the 

 funnels (f/i) are seen arising from quartery branches, fm, 

 fixing muscle ; fn, largest apical funnel. x x 55. 



Fig. 4. — Anterior part of the viscera in situ. Ci, collateral intestine ; 



dv, dorsal vessel \fg, fore-gut near the junction with the mid- 

 gut (ing) ; niv, neurointestinal vessel ; oes, oesophagus ; vp, 

 villus-like processes of the two vessels on the intestine ; vv, 

 ventral vessel. (Nat. size.) 



Fig. 5. — Portion of the ovary (side-view). x 1 56. 



Fig. 6. — Young floating egg with nutritive cell-cap. X156. 



Fig. 7. — Oviduct {ovd), the ventral nerve-cord (v/ic) and the ventral 

 vessel (vv) ; of, oviducal funnel opening into the coclome. x 2. 



Pig_ g. — Male magnified ; al, pieces of the alimentary canal ; sf, 

 funnel of the .spermatic reservoir sr ; spin, sperm cell 

 masses ; vd, vas deferens ; vnc, ventral nerve-cord. 



58 



Fig. I. 

 Fig. 2. 



