594 



A. A. W. HrBRKOHT. 



embryonic cells takes place at quite as early a moment as we 

 have above described it for Galeopithecus, and that " also 

 in Manis it is perfectly excluded to look upon the tropho- 

 blast cells as hypoblastic. And so the early Manis may be 

 joined to the early Galeopithecus as fatal to Assheton's 

 interpretation of the trophoblast. I cannot yet say with 

 certainty, but I have reason to believe that also in the very 

 young hedgehog similar peculiarities occur. 



At the same time it is very suggestive that the quaint and 

 aberrant mode in which the trophoblast cells of Galeopithecus 

 and Manis arise offers so many points of mutual resemblance 

 between these two genera, and differ not inconsiderably from 

 what we find in Primates, Rodents and Carnivores. 



Later investigations will have to decide whether the 

 phenomenon, as it presents itself in Galeopithecus and Manis, 

 is one of precocious segregation. 



