00000 @ 
12345 7 
00000 0000 | 00000 
00000 00000 12345 12345 
4 3 i t 
00000 00000 12345 7 12345 
00000 123457 o0000d =—:12345 
Fic. 15. Helix hortenses. 
sives, as shown by inbreeding (fourth line). 
(After Lang.) 
First (top) line, a bandless and a handed shell. 
these are inbred they give bandless and banded (third line) in the proportion of 6 to 2 (#.e. 3 
When indivi: 
