MODES OF INHERITANCE IN HYBRIDS 477 



wider range of data on pigmentation derived from four additional 

 Fundulus crosses. 



Bancroft's table on page 156 gives in brief form a characteri- 

 zation of the pigment differences found by him in the embryos 

 and larvae of pure bred F. heteroclitus and F. majalis together 

 with their reciprocal crosses. For convenience I shall use this 

 table as a starting point, modifying it where it seems to me to 

 be necessary and adding to it where it does not provide for new 

 characters seen in the new hybrid types. For the sake of brevity 

 the often repeated word 'chromatophore' is abbreviated to 'c' 



