W. BOWATER 



309 



(6) This species stands close breeding well and inbreeding fairly 

 well, though in many of the families which died out the cause seemed 

 to be inbreeding. 



Genealogical Table. 0. hidentata. 



1907 

 1908^ 



1909 



Wild M T 



J/mx Mm 



V 



17 



MM^Mm-\rT 



MM-hMm+T 



Jill 1L15 11.4 11.13 11.911.1 11.12 



MMj^ Mm MM^Mni MmMnL Mm^T T T 



1912 



-/ Middlesboro 



1123 11.5 11.24 



12.34 1231 



MniMm-^T 



12-46 12.26(7 \ ,.-^ mC _ 12 12 .^^^ 12.20 



T Mm^r:^^+^"'-^'^Mm.^T'^*' Mm + T 



12.33 12-39 12.26 ^^'^ 



MM+ MnAAfjn 4- T Mm 4- T 



Thus each of the 50 families (48 bred from ova) falls under one or 

 other of the following well-known Mendelian formulae : 



If 



then 



and 



MM = homozygous melanic, 

 Mm = heterozygous melanic, 

 mm = type, 



MM X MM = MM (A) 



MM X Mm = MM + Mm (B) 



MM X mm = Mm (C) 



Mm X Mm = MM + Mm + luM + mm (D) 



Mm X mm — Mm + mm (E) 



mm' X mm = inm (F) 



I feel that the foregoing is sufficient evidence to prove, that in 

 Odontopera hidentata, melanism follows Mendelian rules and is dominant. 



Journ. of Gen. iii 



•21 



