OCR Text |
Show 1889.] ANATOMY OF THE KANGAKOO. 435 Fig. 1. Female organs of Osphranter erubescens (\ natural size). As explained in the text, nearly the whole of the urogenital passage has been cut away, but the drawing shows the median canal, m.c, completely laid open along the ventral median line and the cut edges pulled apart by the threads av a2. Emerging from the right os uteri, r.o, is the umbilical cord, u.c, which is seen to pass along the median canal, m.c, and to emerge from this by an opening, X. To the attenuated extremity of this cord is attached the embryo, E. Other references:-r.ut, l.ut, right and left uterus, the former considerably enlarged and partially laid open ; Lov, left ovary; bl, bladder ; r.l.c, l.l.c, right and left lateral canals; b, c, bristles passed through their cut ends; d, bristle passing into urethra similarly cut across just before its termination in the urogenital passage ; r.o, l.o, right and left os uteri; r.ur, l.ur, right and left ureters. The openings from the lateral canals into the median are concealed from view, but were to be found just above the internal extremities of the lines r.o, l.o. Bulgings appear at the commencement of each lateral canal, crossed in the sketch by the same lines, r.o and l.o, but there was nothing inside to account for the swellings. |