Plate I. Ovary of Adult Female with Unimplanted Blastocysts, Showing Two Inactive Corpora Lutea. Animal Killed in January. About 8.5 ×. Plate I. Ovary of adult female with 68 mm. CR embryos showing two large active corpora lutea. Animal killed February 2. About 8.5 ×. Plate I. Ovary of adult female during lactation showing three degenerating corpora lutea (shown with arrows) and absence of large follicles. Animal killed April 9. About 8.5 ×. Plate I. Blastocyst of wolverine in situ in the lumen of the uterus. The conspicuous zona pelucida surrounds the embryo. Several nuclei can be seen within the embryo. From animal killed October 18. About 77 ×. Plate II. Skull of Adult Male Wolverine Showing That all Sutures Have Disappeared. The Caudal Extension of the Sagittal Crest is Clearly Shown. About ½ Natural Size. Plate II. Skull of immature male wolverine showing the internasal, naso-maxillary, the naso-frontal and the malar-temporal sutures still open. The sagittal crest is less well developed than in the adult male. About ½ natural size. Plate II. Bacula of Adult Males on the left and Immature Males on the right. About ½ Natural Size.
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