342 The Inheritance of Wing Colow in Lepidoptera 



GENEALOGICAL TABLE. 

 B. consortaria and var. eonsobrinaria. 



(Captured at 

 Sutton Coldfield) f x ^1 



(Bexley) Sxf 



V , 



I 1 



(Bexley) ^ xf ^ x $ (Bexley) 



1913 

 1914 



Intermediate 

 (Oxshott) fx^? 1915 



(New Forest) ^xf ^x?(Bexley) f x (J (Bexley) iff ^ (All inter- 

 mediates) 



'11 E 



'llA 



'IIB 



'17 C 



'11 D 



o=Type. 



1918 families 

 • = Melanic. © = Intermediate. 



1916 



1917 

 1918 



Family '17 C came from a pairing of an intermediate $ (Oxshott) x me- 

 lanic (/ (Sutton Coldfield). Instead of producing the expected 50 per 

 cent, melanic, it gave only 4 melanics and 63 type. As this result is 

 quite unlike any of the later broods obtained, it has not been entered 

 in the tables, on account of the possibility of confusion before the ova 

 were sent. Moreover, I have not seen the parents, and there is always 

 the chance that the cT parent may have been a dark intermediate and 

 not a melanic. It should be mentioned that Mr Newman reported 

 getting 4 per cent, melanics from pairings between the original melanics 

 and type insects. 



It is quite possible that some of the specimens in '17 C and '17 D 

 may have been intermediate like one of their parents, but as they were 

 most of them used for breeding, the specimens were rubbed, and it was 

 impossible to judge them accurately. One of the 1918 families, how- 

 ever, '18 i, instead of producing equal numbers of melanics and types, 

 as was expected, gave melanics and a distinct intermediate form, which 

 was a peculiar dark brown, quite unlike all other specimens. This form 

 is illustrated in Plate XIII, Figs. 4 and 10. Comparison between Figs. 3 

 and 9 and Figs, 4 and 10 shows the latter to be not unlike the dark 

 variety from Oxshott, though slightly paler, forming as it were a link 



