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Show 1881.] VAGINAL APPARATUS IN THE MACROPODID^*. 991 The lateral canals pass at first directly outward from a point rather anterior to the uterine orifices ; they then turn sharply backward, and after a long even course terminate as usual in the urogenital canal. The chief peculiarity of the lateral canals is that there is no thickening of the muscular walls at any point, and no contraction and no cross fold; the canal pursues an uninterrupted course. In his paper (already cited) Brass describes a specimen of the genus Hypsiprymnus (species not given) which had a large bladder-like prolongation forward of the region, common to the median and lateral canals. The median canal is moreover represented as terminating some distance from the urogenital chamber. In both these points our specimen differs from his. His figure shows the clear passage down the lateral canal, with no muscular thickening and no constriction, very distinctly. In the following Table the condition of the median canal in the foregoing examples is stated, and also the fact, where it has been ascertained, as to whether young have been born. Species. Statement whether young have been born or not. Condition of median vaginal chamber. Observers. Kangaroo (gen. ? sp. ?) ) ! !> •• •' )) JJ ' ' * (2) „ „ .... >> J? (2) Macropus major )•» >) • J> ?) j? ') • ! *•*• J ? ' (2) !> >' ' )) " )> >> ' (2) Macropus rufus J> >> (2) „ „ Macropus parryi Macropus penicillatus2 9 Yes. Yes. Yes. Y'es. ? ? ? No'(?) ? ? Yes. 9 Yes. No (voung). Yes. No. ? ? Closed. Open. Closed. Open. Closed. Open. Closed. Open. Closed. Open. Closed. Closed. Open. Home. Seiler. Owen. Carus. Owen '. Vrolik. Pagenstecher. Alis. R.C.S. no. 2739. E.C.S. nos.2740 & 2740 B. E.C.S. no. 3460 D. L. & F. - L.&F.(Camb.sp.). Alix. L.'& F. Owen. E.C.S. no. 2740u. 1 It is possible that these two are identical with the " Kangaroos " quoted above. 2 W e are informed by Mr. Forbes that this animal is properly a Petrogale. |