592 A. A. W. liniJRT'XJHT. 



sire yet necessary, .-md will nndonbtedly soon be undertaken, 

 before we dispose of the comparative material which is 

 necessary for settling this important point in Vertebrate 

 ontogeny, and for finally deciding which nomenclature ought 

 to be adhered to. 1 gladly leave the latter decision to others, 

 but would not let this paper see the light without recognising 

 that until lately I have not sufficiently been aware that 

 Assheton already in 1894 expressed opinions to which Keibel 

 and myself have cotne along other roads, and which, though 

 far from identical, still ovei-lap each other in many respects. 



Al'PKNIMX. 



While this papci- was in the press, :ittem])ts were made by 



Text-fig. 4. 



Ir 



.-caSTto: 



Fig 4 



Part of a section through the blastocyst of Manis. The ectodeviu 

 (ec.) and ondodenn {en.) of the enihrvonic knob are transversely 

 cut. Tlie ti-ophoMast cells appear darker in this figure. 



me to ascertain whether other genera of mammals might 

 perhaps exist which furnish evidence concerning the early 

 phases of the trophoblast that might further corroborate the 

 facts sucb as they aie presented by Galeopithecus. I was all 

 the more anxious to obtain information concerning the earliest 

 stages of the scaled ant-eater (Manis), as, by a i-egrettable 

 lapsus calami, which disfigures both the English and the 

 German version of my '"'early ontogenetic phenomena in 

 mammals, etc.,^' a gastrula stage of Manis is erroneously 

 attributed to Galeopithecus. 



It is fig. 18 on PL C, in vol. 53 of the 'Quart. Journ. of 

 Micr. Sci.,' and fig. 46 in the Gemnan publication. I here 



