LOSS OF EYE-PIGMENT IN GAMMARUS. 297 
VI.A.3.q. Female, Black carrying Red and Albino. 
Matings :—(1) with male g of the same brood, (B+ <A) ; 
(55 young, 35 Black, 20 Albino) ; 
(2) with male [V.J. (B+ R-+A) ; 33 voung, 19 
Black, 7 Red, 7 Albino ; 
(3) with male VI.A.1.d. (B+R+ A); (16 
young, 10 Black, 2 Red, 4 Albino). 
VL.A.3.r. Female, Black carrying Red and Albino. 
Matings :—(1) with a Black male of the same brood ; 7 
young, 4 Black, 3 Albino ; 
(2) with male VI.C.3.a. (B+-R-+ A); 8 young, 
3 Black, 2 Red, 3 Albino. 
VI.A.3.s. Female, Black. Constitution not proved. 
Matings :—(1) with a Black male of the same brood; 4 
young, all Black ; 
(2) with male j of the same brood ; (1 young, 
Black). 
VI.C.1.a. Male, Black carrying Albino. 
Matings :—(1) with a female from Pure Red Stock ; 66 
young, all Black ; 
(2) with an Albino female [.D.2.d. ; 49 young, 
24 Black, 25 Albino. 
VI.C.1.b. Male, Black carrying Red and Albino. 
Matings :—(1) with female f of the same brood (B+R+ 
A); 74 young, 41 Black, 15 Red, 18 
‘ Albino (Plate IV, Fig. 15) ; 
(2) with female k of the same brood (B+ A) ; 
27 young, 20 Black, 7 Albino (Plate IV, 
Fig. 14). 
VI.C.1.c. Male, Black carrying Red and Albino. 
Matings :—(1) with a female from Pure Red Stock ; 53 
young, 33 Black, 20 Red ; 
(2) with female | of the same brood (B+R-+- 
A); 17 young, 12 Black, 3 Red, 2 Albino. 
VL.C.1.d. Female, Black carrying Red and Albino. 
Matings :—(1) with male n of the same brood (R+<A) ; 
96 young, 37 Black, 35 Red, 24 Albino ; 
(2) with male o of the same brood, (R-+A) ; 
39 young, 12 Black, 16 Red, 11 Albino 
(Plate IV, Fig. 6) ; 
