LOSS OF EYE-PIGMENT IN GAMMARUS, 31 
Ww 
VI.B.1.j]. Female, Pure Red. 
Matings :—(1) with male d of the same brood, (R+A) ; 
(55 young, all Red) ; 
(2) with male a of the same brood, (Pure 
Red) ; (37 young, all Red). 
VI.B.1.k. Female, Red. Albinism not known. 
Matings :—(1) with male m of the same brood, (A+R) ; 
four months in the bowl, six matings, no 
young hatched, female died. 
VI.B.1.1. Male, Red. Albinism not known. 
Put with a female from the same 
stock as R.1. maie (Plate IT), no mating. 
VI.B.2.a. Male, Red carrying Albino. 
Matings :—(1) with female f of the same brood, (R+ <A) ; 
8 young, all Red ; 
(2) with female p of the same brood, (Red, 
albinism not known); 2 young, Red ; 
(5) with female e of the same brood, (R-+A) ; 
8 young, 6 Red, 2 Albino ; 
(4) with female v of the same brood, (A+R) ; 
38 young, 35 Red, 3 Albino ; 
(5) with female u of same brood, (A+R); 
48 young, 24 Red, 24 Albino (Plate IV, 
Fig. 18). 
VI.B.2.b. Male, Red carrying Albino. 
Matings :—(1) with female ¢ of the same brood, (Pure 
Red) ; 87 young, all Red ; 
(2) with female w of the same brood, (A+R); 
222 young, 118 Red, 104 Albino. 
VI.B.2.c. Male, Red carrying Albino. 
Matings :—(1) with female h of the same brood, (R+ A) ; 
11 young, 7 Red, 4 Albino ; 
(2) with female g of the same brood, (Pure 
Red) ; 21 young, all Red. 
VI.B.2.d. Male, Red carrying Albino. 
Matings :—(1) with female r of the same brood ; 7 young, 
all Red ; 
(2) with female e of the same brood, (R+ A) ; 
25 young, 21 Red, 4 Albino ; 
(3) with female VI.A.2.c. (B+R) ; (27 young, 
16 Black, 11 Red). 
