344 



PROCEEDINGS OF SECTION D. 



Figure 1. 



lA. 



2. 

 3. 

 4. 



4a. 



5. 



6. 



7a. 

 8, 

 9. 

 ,, 10. 



,, 11. 



,, 12a. 



,, 12b. 



,, 13. 



,, 14. 



„ 14a 



„ 15. 



„ 16. 



,, 17. 



,, 18. 



,. 19. 

 Figures 

 20 to 25. 

 Figure 26 



,. 27, 



.. 28, 



Description of Figures. 



Photograph of groups of whole nodules. 



Same of four nodules, with large proportionate worm-area. 



Same, with small proportionate worm-area. (=xx) 



Partially dissected worm nodule, x 3. 



Two heads. Male and female. Partially dissected out. 



Diagram showing method of coiling. 



Head of female, with forward position of vulva, x 124. 



Head of female, with backward position of vulva, x 78. 



Anterior portion of female worm back to bifurcation of uterus. 

 x 50. 



Head of female, showing papillae, x 646. 



Tail of female, x 96. 



Whole male worm ; drawn when living, x 2. 



Tail of normal male ; side view. (Thickness of cuticle very 

 slightly exaggerated), x 545. 



Tail of male, side view ; with abnormal papillae, x 568. 

 . Diagram showing normal position of papillae. 

 . Diagram showing abnormal position of papillae. 



Unicellular ovum, x 1060 (approx.). 



I Two-celled embryo, x 1060. 



Four-celled embryo, x 1060. 

 Seven-celled embryo, x 1060. 

 Sixteen-celled embryo, x 1060. 

 Thirty-celled embryo, x 1060. 



Thirty-six-celled embryo. " Comma " stage, x 1060. 

 Successive stages in elongation and increase in size and com- 

 plication of embryo. Fig. 20-22, x 1060. Fig. 23-25, x 1085. 



> Abnormal (?) stages in development of embryo, x 1085. 



Fully developed free larva from smear, x 610. 



