No. 5(51] THE NINE-BANDED ARMADILLO 539 



peculiarity in the mother may be inherited by one, two or 

 all of the offspring, as a row of peculiar scutes starting 

 at the place where the one peculiar element occurs in the 

 mother. Such fluctuations in the expression of a type 

 peculiarity may conceivably be due to epigenetic factors, 

 and suggest duplication of factors of the neo-mendelian 

 sort. 



One of the problems of this material is to determine 

 why one individual or one pair inherits a dominant 

 peculiarity from the mother, while the others do not. 

 They all have the same germinal constitution at the 

 beginning and that some should inherit the character and 

 others not seems to imply that there must have occurred 

 a segregation of maternal and paternal inheritance 

 factors during cleavage. The distribution of the char- 

 acters so as to produce mirrored image effects, together 

 with this segregation of parental characters, seems to 

 imply a sort of diehot onions distribution of some mate- 

 rial basis that conditions the development of the char- 

 acters so segregated and distributed. Such determiners 

 need not be conceived of as Weismannian elements, but: 

 that they have corporeal existence appears to the writer 

 as an unavoidable conclusion. 



The data upon which these conclusions are based are of 

 highly complex character and have not yet been published 

 in extenso. The demonstration of the tenability of the 

 conclusions can be made only by the use of much more 



