MANIS 349 



chorion from both horns, the distribution of the spongy and bare spaces of the 

 uterine wall could be studied. On the left margin of the os there was a prominent 

 eminence of the mucosa, somewhat conical in form, and from its apex a broad and 

 thick band of spongy substance, the broadest on the ^'hole of the uterine siirface, 

 extended as far as on a level with the left angle of the orifice into the left horn 

 where it ended in the commencement of a broad bare tract free from villi, and which 

 ran along that portion of the inner surface of the uterus and along the short side 

 of the septum already mentioned. A very narrow bare tract occurred on either 

 side of the broad and thick cryptose band, but both were more or less broken up 

 by minute villous tracts which crossed them, or they were here and there covered 

 with small villi. Two broad bare tracts radiated forwards from the os uteri internum 

 on the ventral wall, enclosing broad cryptose areas of the uterine mucosa broken 

 up by smaller bare tracts. A similar arrangement occurred on the dorsal and 

 lateral walls. As the bare tracts arose around the os uteri internum, the lips 

 of that orifice were more or less bare, but the areas intervening were rugose. 

 The bare tracts not interrupted by the orifice leading into the left horn ran for- 

 wards along the wall of the uterus, and when they reached the proper cavity of 

 the right horn they were broad, but secondary bare tracts originated between 

 them. The bare tracts were not so broad as the cryptose tracts. In some parts 

 these bare tracts became broken up into round bare areas, much as in Orcella. 

 On the remainder of the right horn the linear arrangement of the bare tracts was 

 less, and that surface opposite to the os uteri tuternum was irregularly covered 

 with broad bare areas and cryptose tracts. The area immediately around the orifice 

 of the Tallopian tube was bare. The long bare tract corresponding much in posi- 

 tion to the attachment of the broad ligament, divided as it approached the Fallopian 

 pole of the gravid horn, but the right branch was very short and broad, whereas the 

 left branch dUated at first considerably, and then broke up and lost itself among the 

 surrounding feebly cryptose surface of the mucosa. The area at the bifurcation 

 of the long bare tract was more cryptose than the siirrounding parts. The general 

 arrangement of the bare tracts was in the direction of the long axis of the right horn. 



In the left horn, the distribution of the narrow bare tracts followed the 

 same course as in the right bom. Immediately around the orifice of the Fallopian 

 tube there was a great nude area extending almost over one-third of the surface 

 of the mucosa, and there were numerous isolated bare spots among the surrounding 

 cryptose tissue, some tending to form linear tracts. 



In both horns, the surface of the bare tracts, in many places, I observed to 

 be marked by minute depressions or pits easUy visible with a hand-lens, and it 

 appears probable that these will be found to be the orifices of the utricular glands. 

 These structures, however, I failed to detect in fine sections under the microscope, 

 but Professors Sharpey and Turner have demonstrated their presence in the uteriue 

 mucosa of the species of Manis which they both examined. 



On tying the ruptured end of the right sac of the membranes and dilating 

 the membranes with water, it was found on examiuing them under water that the 



