No. 384.] SHELL OF HELIX NEMORALIS. QI7 
ful if it be correct to put the splitting and the disappearance 
in the same category, but every method of classification offers 
difficulties. 
TABLE III. — PERCENTAGE FREQUENCY OF WHOLE SERIES 
CLASSIFIED. 
The figures in parenthesis indicate the number of different varieties in each group. 
: B. E. 
as: o a Aae a er ee {94i (*)31-6 
12345, two or more bands fused . . . (%)18.3 (33)17.1 (77) 30.6 
and i, variable. os ow ess FES H tS (5) 5-1 
y "s (6) 10.4 ()11.1 Jya 
moat (*) 3-2 (*) 4.7 (*) 3-3 
“ 4, “ ($) 0.3 (?) 0.2 (*) 0.4 
sa (*) or (*) 0.3 (C) 0.2 
Bands! 1 and 2, variable (5) 2.3 (J 22 C) s3 
I 3 a (7) O.1 o. (4) 0.6 
“ 7 “e O. oO. (7) O.I 
"ae Gp o (€) 1.3 (°) 0.9 () 0.3 
4 2 « 4; “ (5) O.I (*) O.I (*) O.I 
e e piacere P Do oe Ok wes o (*) o1 0 0.1 
yon y " a ee Cy Oe oO. o. 
Three bands? variable. . . . , . + () 08 (6) 0.7 (£) 0.9 
Four bands? variable. . . . - - + (°)10.3 ()10.5 (?) 0.3 
All five bands‘ variable . . . - + + () 42 (*) 3-4 (*) 5 
Extra Banps WITH oR WITHOUT OTHER VARIATION. 
212345 C) 02 (€) on 
laQthS ko ee es es (7) 0.1 (*) 0.1 o. 
TA e e a e a (°) 1.5 (°) 1.5 ey ES 
123245 ee ie ee a C) 3-4 (7°) 5-6 
Hue oo ee rc nee ea eet eta er (4) 0.4 (5) 0.4 (7) 0.1 
Rg re eo eS (7) 0.1 o. o 
P E 8 oe ee (7) 0.1 (*) 0.1 O. 
rB i es oe OY a (4) 0.4 (4) 0.4 (°) 0.5 
1273425 Š D a o. (7) oi o. 
1232425 o. (*) 0.2 o 
Ix2x3045- (7) 0.1 o. o 
1 Variation in bands 1 and 4, 2 and 5, and 4 and 5 has not been found. 
2 Bands 123, 124, 125, 145, and 245. Single specimens of 234 and 235 variable 
are also known in the colony, but not in these series. 
8 All with 1245 variable, except two shells of 00005. 
4 Chiefly 00000. 
