10 E 



Canadian Arctic Expedition, 1913-18 



PLATK II.** 



Fig. 6. Echinorhynchus salvelini. Outline drawing showing general body form of mature female. 



7. Embryo from body cavity of gravid female of E. salvelini. 



8. Male of E. salvelini in optical vertical section. 



9. Selective apparatus from genital tract of mature female of E. salvelini. 



10. Outline drawing showing general body form of Echinorhynchus coregoni, female. 



11. Portion of body wall of E. coregoni, showing numerous small subcuticular nuclei. 



** Scales indicating magnification accompanying figures 6, 8, and 10 have the value of 2 mm.; those 

 accompanying figures 9 and 11, O.I mm. and figure 7, 0.05 mm. 



