2 
LOSS OF EYE-PIGMENT IN GAMMARUS. 303 
Black carrying Albino, by B+R-+ A, 92 Black, 45 Albino: by A+B-+R, 
29 Black, 41 Albino: by B+A, 15 Black, 8 Albino: by B+R, 51 
all Black. 
Black carrying Red, by R, and R+-A, 95 Black, 105 Red. 
Black carrying Red, by B+R, 29 Black, 14 Red: by B+R-+A, 38 
Black, 114 Red. 
Black carrying Red and Albino, by R, 168 Black, 147 Red: by R+A, 
216 Black, 178 Red, 143 Albino: by A+R, 31 Black, 8 Red, 34 
Albino. 
Black carrying Red and Albino, by B+R-+-A, 205 Black, 72 Red, 104 
Albino: by A+B+R, 2 Black, 1 Red, 4 Albino. 
[In the F,, generation proceeded with for proof 450 young (F,) were 
produced, 272 Black, 147 Red and 31 Albino. | 
= 
‘ 
(2) List of the cross-matings made with the black-eyed animals 
which had given some red offspring when mated with reds or other 
blacks :— 
VI.A.1.a. Male (B+R): tested with Red: 5 Black, 3 Red. 
(1) crossed with female VI.A.1.1. (B+R-+A) ; 
45 Black, 11 Red ; 
(2) crossed with female VI.C.l.d. (B+R-+A): 
30 Black, 12 Red. 
VI.A.1.b. Male (B+R): tested with Red: 5 Black, 10 Red. 
(1) crossed with female VI.A.l.g. (B+R-+ A); 
23 Black, 4 Red ; 
(2) crossed with female VI.A.1.£. (B+R+A); 17 
Black, 8 Red. 
VI.A.1.d. Male (B+R-+ A): tested with Red: 3 Black, 7 Red. 
(1) crossed with female VI.A.3.q. (B+R-+A) ; 
10 Black, 2 Red, 4 Albino. 
VI.A.1.e. Male (B+R-+A): tested with Red: 11 Black, 7 Red. 
(1) crossed with female VI.C.1.h. (B+R) ; 60 Black, 
28 Red. 
VI.A.14. Female (B+R-+A): tested with Red: 4 Black, 8 Red. 
(1) crossed with male b, see above ; 
(2) crossed with male VI.A.3.c. (B+R+A); 2 
Black, 1 Red, 2 Albino. 
