Drosophila Melanogaster. 295 
(b) Coral by Tinged ¢. 
P. w°XO wwiXX 
F, wwexx wXO 
44 36 
F, witw'XX ww xX xX wXO w’’XO 
tl 02'S Bie See ee ee Sil 48 33 35 
Eos as | eee eee 63 60 61 60 
NOs bs 5,6 tne Caeeooi ae ee 5 ff 4 8 
2B 55 ee ee 68 54 74 52 
APPIN Sh Fakes ae oon 68 68 53 61 
21d Sin ee 24 18 9 14 
MOGalea sty siccen sh. 259 255 234 230 
Linkage of Coral and Blood. 
© Coral 2? by Blood. 
P weowcoX X wbXO 
Y,; w°ewoxX w'’'XO 
18 18 
F, Flies Female just a hint lighter | As these flies become 
than male. older the sexes are in- 
distinguishable. 
F, weweXXK wwhXX w°XO whXO 
etre Newt ees Ce 116 103 
LEN aa te eee 159 135 
2 a Ane a aoe 49 $1 
eon eee eae 180 178 
LUCE A 945 497 
The two classes of males can be separated when young. Females cannot 
be separated with certainty. 
which overlaps the coral. 
They show a variable range as is true of blood 
