30 E. W. SEXTON AND M. B. WING. 
in the two instances noted, when a proved Hybrid mate was used, with the 
following results :— 
P.? 13 young. Black. 
Hey A205", 67 Black and 53 Red. 
2 2 4 mates, 2 P. and2R. 5 broods laid, none hatched. 
P.3 64 young. Black. 
Te a 8 Black and 6 Red. 
EZOP nO: # Black. 
BAe Side Black. 
Peto: Black. The eye of this female is figured. See Fig. 1. 
1 ef CO 5 Chae sae Black. 
His@s. mien 5 Black and 3 Red. 
Minky Black. Female eaten. 
aaa 11 Black and 4 Red. 
Heo fA ine. 3 Black and 1 Red. This female was tested with a 
Hybrid Black mate. 
Ens, 10 Black and 4 Red. Also with a Hybrid Black mate. 
4S Katen by mate. 
1s ei 5 la 31 Black and 26 Red. 
Por 20°", 12 Black and 8 Red. 
Peo. Black. 
Hee 2a 12 Black and 12 Red. 
Reo. wo Black. 
2 2 This is the Abnormal one mentioned above. 
In the third cross (c) P. x R., the matings have always produced black- 
eyed offspring, all Hybrid Black. The figures obtained in the F, genera- 
tion may be quoted here—1563 young (see p. 39), as well as those of the 
Parent generation given in the next paragraph. 
THe Hysrips. 
Parent generation. 
In the Parent generation 33 experiments were made, starting in 
November, 1913, Pure Black males being mated with Recessive females, 
and Recessive males with Pure Black females, 16 experiments with 
the first cross, and 17 with the second. There were 18 broods hatched 
from the first cross P. 3g x R.9, numbering in all 323 young; and 21 
broods from the second cross R. 3 x P. 2 with 313 young. In all these 
experiments without exception, the young had black eyes. In the first 
cross some paired without results, the others had from one to six 
broods each, the largest number in a single brood being 38. In the 
