438 
The 
DR. E. E. STIRLING ON THE [Nov. 5, 
Fig. 2. 
N.g-c- 
Female organs of Macropus major (3 natural size). 
organs have been laid open by a dorsal median incision. The two lateral 
canals, /./.c, r./.c, are seen enormously distended in their upper parts. The 
upper part of the median canal, m.c, is also much distended. The large 
openings between this and the lateral canals are not seen; /.0 points to 
the os of the left uterus, 7.0 to the right os; 7r.ov, /.ov, right and left 
ovaries. The threads, @,, @,, 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, w.g.c; w, 
orifice of urethra, into which a bristle is passed and just above this is the 
keel-like process, f, described in the text and represented on a larger scale 
in fig. 3; Y, points to the larger and smaller culs-de-sae described in the 
text; 7, 7,, the two lateral halves of the rectum completely cut across 
longitudinally in laying open the median canal from behind; 8, ¢, bristles 
passed inte the openings of the right and left lateral canals into the 
urogenital passage, 
