112 



SPECIMENS OF CETACEA. 



[Nos. 8 to 14 are from the gravid uterus the placen- 

 tation of which is described by Sir Wni. Turner in 

 Trans. Roy. Sue. Edin., vol. xxvi., 1891.] 



8. Placenta. A portion of the chorion of Orca gladiator, 

 from the left uterine cornu which contained the fa?tus, 

 injected red. The villi are distributed over the sur- 

 face of the chorion. Amniotic corpuscles are present. 



U. Placenta. Portion of the same chorion in which the 

 umbilical artery was injected red ; the ramifications of 

 the vessel are seen, and the diffusion of the villi on 

 the free surface. 



10. Placenta. A portion of the same chorion displaying the 

 stellate non-villous area which lies opposite the os 



