. Bulletin. body-form of fully maturefemale. Body cavity is so packed with embryos that internal structures arecompletely obscured. Whole mount in damar. Fig. 13. E. coregoni. Outline of fully mature female. Note contrast in body-form and size of this species and of E. salvelini. Pig. 14. Neoecliinorhynclnis emydis. Surface view of proboscis of fullymature female from intestine of Graptemya pseuclogeographica. Hematoxylin-stained specimens in damar. Pig. 15. N. cylindratus. Surface view of proboscis of fully mature femalefrom Micropterus salmoicles. Whole mount in damar. Pig. 16. N. tenellus.
. Bulletin. body-form of fully maturefemale. Body cavity is so packed with embryos that internal structures arecompletely obscured. Whole mount in damar. Fig. 13. E. coregoni. Outline of fully mature female. Note contrast in body-form and size of this species and of E. salvelini. Pig. 14. Neoecliinorhynclnis emydis. Surface view of proboscis of fullymature female from intestine of Graptemya pseuclogeographica. Hematoxylin-stained specimens in damar. Pig. 15. N. cylindratus. Surface view of proboscis of fully mature femalefrom Micropterus salmoicles. Whole mount in damar. Pig. 16. N. tenellus. Surface view of proboscis of fully mature female fromStisostedion vitreum. Stained in hematoxylin and mounted in damar. The hookshown in broken outline lies behind the median plane. Terminal hooks in thisspecies point more directly backward than in other members of the genus. * Scales indicating- magnincation of Fig. 12 and 13 have a value of 1 mm.; allothers in the plate have a value of mm. Tlate XXIV. Plate XXV * Pig. 17. Neoechinorhynrhus ci/lhulratus. Outline showing general body-formand size of fully mature female from intestine of Micropterus salmoides. Posi-tions of giant nuclei of subcuticula are indicated. Body completely filled withdeveloping embryos, which obscure all internal structure. Hematoxylin-stainedmount in damar. Fig. IS. Embryo from body-cavity of female shown in Fig. 17. Fig. 19. N. tenellus from intestine of StizOstedioti vitreum. Outline of gravidfemale, showing general body-form. Hematoxylin-stained whole-mount in damar. Pig. 20. Embryo from body-cavity of specimen shown in Pig. 19. Fig. 21. Neoechinorhynchus from intestine of Qra-ptemys Outline showing general body-form of gravid female with body-cavity completely packed with embryos. Pig. 22. Optical section of immature male of same species. A comparisonof this figure with the preceding one shows how slightly the increase in bodysize due to growth modifies the general
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
