OCR Text |
Show 438 DR. E. E. STIRLING ON THE [Nov. 5, Fig. 2. Female organs of Macropus major Q natural size). The organs have been laid open by a dorsal median incision. The two lateral canals, l.l.c, r.l.c, are seen enormously distended in their upper parts. The upper part of tbe median canal, m.c, is also much distended. The large openings between this and the lateral canals are not seen; l.o points to the os of the left uterus, r.o to the right os; r.ov, l.ov, right and left ovaries. _ The threads, av a2, pull asunder the walls of the lower part of the median canal, in which can be seen the ridge spoken of in the text, X, opening between the median canal and the urogenital passage, u.g.c; u, orifice of urethra, into which a bristle is passed and just above this is the keel-like process, /, described in the text and represented on a larger scale in fig. 3 ; Y, points to the larger and smaller culs-de-sac described in the text; rv r2, the two lateral halves of the rectum completely cut across longitudinally in laying open the median canal from behind;"b, c, bristles passed into the openings of the right and left lateral canals into the urogenital passage. |