I read this rumor probably 40 years ago. Part of the suggestion what that the early French Egyptologists destroyed the noses on the sculptures to eliminate the negro flat noses. This is simply BS. It is clear from the paintings that the Egyptians did not have flat noses. It would be very easy to prove if the paintings had a dark skin color that faded there would still be traces of it.
As to blacks being a different species:
I'm not a liberal but this too is BS. Obama is one of many where a negro and a Caucasian produced a baby. That baby will and has produced offspring. SIMPLE PROOF THAT WHAT WE CALL BLACKS AND WHITES ARE THE SAME SPECIES. An interesting fact for the bigots out there. What we now call blacks, used to be ok to call them negros and what we call white, perhaps it is still ok to call them caucations, both get their skin collar for melanin.
The color is the same. Just that blacks have more of it.