Shell, length aie.) 
Shell, width (mm.) 
Shell, proportions (per cent) 
TABLE 241. Partula otaheitana crassa. Progressive 
colonial variation as regards range and mean value. 
| 
| 
1 2 3 4 5 6 7 8 9 
Southern series occidentalis Northern series aberr 
> SS > j = 2 S >| 
ShaaneSy tneh Pgs Ba eae 5 
s S G8 < E PY 2, 
oF 5 iS 5 = & a 3 g 
S a 6 a ¢ “< Ss « & 
a e 
ie og 
15.35 
15.65 | 
15.95 | 
116.25 i 
Ae 55 
Ae 85 | 
17.15 
17.45 
17.75 
18.05 
18.35 
18.65 
