LOSS OF EYE-PIGMENT IN GAMMARUS. 299 
VI.C.11. Female, Black carrying Red and Albino. 
Matings :—(1) with a male from Pure Red Stock; 40 
young, 18 Black, 22 Red ; 
(2) with male c of the same brood (B+R-+ A) ; 
(17 young, 12 Black, 3 Red, 2 Albino). 
VI.C.2.a. Male, Black carrying Red and Albino. 
Matings :—(1) with female f of the same brood (B+ R+ 
A); 18 young, 7 Black, 2 Red, 7 Albino, 
(and 2 others eaten). 
VI.C.2.b. Male, Black carrying Red and Albino. 
Matings :—(1) with female g of the same brood (B+ R+ 
A); 21 young, 10 Black, 4 Red, 7 
Albino. 
VI.C.2.c. Male, Black carrying Albino only. 
Matings :—(1) with female h of the same brood, Black 
carrying Albino only probably ; 8 young, 
6 Black, 2 Albino ; 
(2) with female VI.B.3.f. (R+A); 6 young, 
5 Black, 1 Albino. 
VI.C.2.d. Male, Pure Black. 
Matings :—(1) with female j of the same brood ; 67 young, 
all Black ; 
(2) with female VI.B.2.¢. (Pure Red); 23 
young, all Black ; 
(3) with female VI.B.2.v. (A+R); 21 young, 
all Black. 
VI.C.2.e. Male, Black carrying Red and Albino. 
Matings :(1) with female k of the same brood (B+ 
R-+<A); 8 young, 7 Black, 1 Albino ; 
(2) with female | of the same brood (B+ 
R+A); 27 young, 15 Black, 3 Red, 9 
Albino. 
VI.C.2.4. Female, Black carrying Red and Albino. 
Matings :—(1) with either male b or male e of the same 
brood (B+-R-+ <A); 12 young, 4 Black, 
1 Red, 7 Albino ; 
(2) with male a of the same brood (B+R-+ A) ; 
(18 young, 7 Black, 2 Reds, 7 Albino 
and 2 others eaten). 
