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PROF. W. TURNER ON THE PLACE NTATION OF THE LEMURS. 
Fig. 7. Free surface of a small portion of the uterine mucosa of Propithecus diadema. 
X 2 diameters. The convoluted folds of the mucous membrane with their 
crypts are represented, and amidst these folds five smooth depressed areas, in 
which the mouths of the utricular glands open, may be seen. 
Fig. 8. Anterior surface of the gravid uterus of Indris brevicaudatus in an early stage 
of pregnancy. Natural size, f, fecundated, nf non-fecundated cornu. 
o o, ovaries ; l, round ligament ; V, vagina. 
Fig. 9. Surface view of one of the smooth depressed areas on the uterine mucosa of 
Lemur rujipes. X 50 diameters. In the smooth area may be seen the open 
mouths of a number of glands which converge to the area from beneath the 
surrounding crypts. The great vascularity of the walls of the crypts is shown, 
but at the right side of the figure the injection has not penetrated into the 
capillary plexus. If this drawing be compared with the free surface of the 
uterine mucosa of the gravid Pig, as figured in my paper in the ‘Journal of 
Anatomy and Physiology,’ October 1875, a close correspondence will be seen 
in the arrangement and vascularity of the crypts ; but whilst the smooth 
depressed spot in the Pig has only one gland opening in it, that in the Lemur 
has between twenty and thirty. The specimen satisfactorily shows the inde- 
pendence of the glands and the crypts ; for although the glands are subjacent 
to the crypts, they do not open into them. 
Fig. 10. Vertical section through two convoluted folds and an intermediate sulcus of 
the uterine mucous membrane of Propithecus diadema. a, the vascular crypt 
layer of the mucosa; b , the subjacent glandular layer ; c, the muscular coat. 
If this drawing be compared with a similar vertical section through the uterine 
mucosa of Orca gladiator , which I have figured in the Transactions of the 
Royal Society of Edinburgh, vol. xxvi. plate xviii. fig. 12, a remarkable 
resemblance in the form and vascularity of the crypts will be seen ; in Orca, 
however, the glandular layer is thicker than in Propithecus. ff, two folds 
vertically divided ; s, intervening sulcus. Both the sulcus and the folds are 
thickly pitted with crypts. X 50 diameters. 
Fig. 11. A more highly magnified view of portions of the walls of two crypts, to show 
the relation of the columnar epithelial lining of the crypts to the capillary 
plexus in the wall. A, a crypt vertically divided ; B, a crypt cut across 
obliquely. 
Fig. 12. A portion of the chorion of Propithecus diadema , magnified, to show the sub- 
division into villi of the ridges which traverse its free surface.. 
