. A manual of zoology. Zoology. Fig. 604.—Female genitalia of (^) Echidna aculeata; (B) of Didelphys dorsigcra; (C) Phascolomys wombat (B and C, after Wiedersheim), d, cloaca; d, rectum; h, urinary bladder; n, kidney; 0, ovary; od, oviduct; pu, mouth of ureters; sii, urogenital sinus; t, ostium abdominale tubx-; «, uterus; «', opening into vagina; ur, ureter; v, vagina; vb, vaginal blind sac. open into the urogenital sinus as a third vagina. This partial fusion of the vagina; of the marsupials is completed in the placental mammals, the single vagina and the sinus forming a single canal (fig. 6
. A manual of zoology. Zoology. Fig. 604.—Female genitalia of (^) Echidna aculeata; (B) of Didelphys dorsigcra; (C) Phascolomys wombat (B and C, after Wiedersheim), d, cloaca; d, rectum; h, urinary bladder; n, kidney; 0, ovary; od, oviduct; pu, mouth of ureters; sii, urogenital sinus; t, ostium abdominale tubx-; «, uterus; «', opening into vagina; ur, ureter; v, vagina; vb, vaginal blind sac. open into the urogenital sinus as a third vagina. This partial fusion of the vagina; of the marsupials is completed in the placental mammals, the single vagina and the sinus forming a single canal (fig. 605). Here the uterine portions may remain distinct (uterus duplex or rodents. A), or they may fuse partially (uterus bicornis of insectivores, whales, ungulates, and. Fig. 605.—A, uterus duplex; B, uterus bicomis; C, uterus simplex (from Gegen- baurj. C(i, oviduct; M, uterus; v, vagina. carnivores, B), or they may be completely fused (uterus simplex of apes and man, C). Thus there are three different types of the female genitaha, in which the vagina is not differentiated (Ornithodelphia), or is double (Marsupi- alia), or is single and unpaired (Monodelphia). To these correspond three types of development. The Ornithodelphia are oviparous, the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929, ed. and tr. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1912
