1884.] 



OF TETKACEROS QUADRICORNIS. 



devoid of carunculae myritiformes, and thrown, in the collapsed state, 

 into numerous irregular longitudinal folds. 



The OS uteri was guarded by a number of papillae, and led not 

 directly into the uterus, but into a passage, two inciies and a half 

 in lengtli, which was plentifully beset with caruncles, and which 

 at its upper end opened into the body of the uterus. 



The uterus itself was divided into two compartments by a rftedian 

 antero-posterior septum, the free edge of which projected downwards 

 for nearly an inch into the above-mentioned passage. 



Fig. 1. 



Gravid uterus of Tetraceros qiiadricornis ; one half natural size. 



a. /), line of constriction, indicating the dividing septum ; c, level of os uteri ; 



d, bladder. 



The most noticeable thing about the shape of the uterus was the 

 small size of the Fallopian tubes. In the accompanying drawing of 

 the whole structure, one half the size of nature (fig. 1), the median 

 constriction is an indication of the dividing septum. The placental 

 cotyledons are seen through the walls as dark blots on the surface of 

 the uterus. 



On examining the placenta, the first point which struck me was 

 the small number of cotyledons, one foetus having thirty and the 

 other only twenty-two, whereas the smallest number hitherto 

 recorded in any Antelope is sixty. The cotyledons were distributed 

 irregularly over the surface of the chorion, the villi being simple 

 and very large, each about 2mm. long. Each foetal cotyledon was 

 surrounded by a raised ring, bearing small, densely packed villi 

 (fig. 3), while the maternal cotyledons projected from the wall of 



1* 



