96 ROBERT STANLEY McEWEN 
TABLE 24 
Tinged eyed flies 
Group A 
AVERAGE 
SEX V G R 
Sex Violet z Green | Red 
f st Ga Ona Ols | Mlaleteee.. 100.0 100.0 79.1 
Male.....;|2d|0 | 6 | 0 | Female... 98.3 99.1 97.0 
isd O70) 186 
Teste gk ae Ne @ (a. Tied twice 
Female. . 2d | 0 2 1 Female 4 b. Tied twice 
|| 3d | 2a] 3b] 5e (ce. Tied three 
Group B 
Ist | 4 0 0 IMiaileyenee 100.0 98.7 70.1 
Male..... ;| 2d | 2a| 6b] 0 | Female... 100.0 97.29 97.5 
[uieesclin | OWe6 
(| 1st] 6 | 0 E - : 
Female. . Ze Omnle2aa|| a Male e ae ane Female ‘ BS as 
llsa|o | 4a| 5b b. Tied tw Paltre ree 
Groups A and B combined 
ist (10.10 0) Male...) eto000 99.3 | 74.6 
Male..... 2a | 2d |12b]| 0 Female... 99 1 9875 97 .2 
34/0 |0 {12 | 
1st 10% ele |"0 Ta ; 4 a. Tied twice 
Female..{/2d]0 |4 |2 | Male in Tied tnien  Pemale 4 b. Tied five 
3d | 2a | 7b |10c Roatan es ce. Tied six 
Turning now to the results obtained from the tests on normal 
and sepia, we find that the early records for normal made during 
the summer of 1916 have been confirmed. The order of effec- 
tiveness is not violet, green, red, but violet, red, green. There is 
one exception to this in the group A males where the green 
slightly exceeds the red. Finally in the case of sepia, there is 
the same reversal of the relative effectiveness of red and green. 
This instance, however, is more clear-cut than is the case with 
normal, for with sepia the red exceeds the green in all respects 
with absolutely no exceptions. 
