110 



TJ3NIA FIMBRIATA, DiesiQg. 

 Plate XII. 



Fig. 1. Adtilt, natural size. From ooutraoted alcoholic specimen. 



Fig. 2. Head, edge view, x6. 



Fig. 3. Head, side view, X6. 



Fig. 4. Head, top view, x6. 



Fig. .5. Portion of segment : a, genital pore ; h, cirrhus pouch; c, seminal appara- 

 tus; d, the effereut tube; e, tlie rudimentary uterine apparatus ; /, vagiua; 

 g, the receptacle of the semen ; h, fliuhria;. 



Fig. 6. Portion of segment more mature than Fig. 5: a, genital pore; i, cirrhus 

 pouch ; d, efferent tube ; c, the uteri. 



Pig. 7. The uteri enlarged. 



Fig. 7a. The uteri still farther enlarged, showing the contained embryo. 



Fig. 8. A half-grown t;enia, showing the fimbriie, X2. 



Fig. 9. Fragment of tieuia from near head, showing the lateral excretory vessels. 



Fig. 10. Terminal portion of adult, X2: a, segments which have lost their contractil- 

 ity ; h, separated segments. 



Fig. 11. External reproductive apparatus, X40: a, genital pore ; 5, cirrhus pouch ; c, 

 penis. 



Fig. 12. Adult segment showing tlie symmetrical arrangement of the reprodnetive 

 apparatus: a, a, genital pores; 6, 6, uteri; o, c, fimbria}. 



Fig. 13. Embryos as they exist in the uteri : a, a, envelopes ; b, b, embryo. 



Fig. 14. Embryo showing envelope and its six hooks.' 



Fig. 15. Youngest tieuia found. Natural leugth indicated by lines at their sides. 

 All specimens except figures from 1 to 4 and 15 were drawn from fresh preparations. 



