TaBLE 72.—Partula otaheitana amabilis, Pirai Valley. 
Series. 
PARTULA OTAHEITANA. 
No. of plain. 
176 
Class 
Il. 
[(104) 107 (3)] 
No. of 
banded. 
Percentage of plain. 
60.5 
[(35.7) 36.7 (1.0)] 
139 
Numerical relations of the color-classes. 
Per cent 
banded. 
82 2 
20.6 45.6 
66.2 
3259 
eS 
0.8 
16.8 57.8 
74.6 
{Se a 
16.8 67.4 
TaBLe 73.—Partula otaheitana amabilis, Pirai Valley. 
MEAN VALUE. 
Proportions. 
p. ct. 
58.1917 + .0831 
58.1738+ .1017 
58.1250+ .1894 
58.4942 = .0840 
58.2967 = .0533 
Length. 
mm. 
9.7602 + .0207 
9.5035 + .0213 
9.4806 + .0364 
9.2072+ .0170 
9.4635 + .0118 
Aperture. 
Width. 
mm. 
7.6038 .0164 
7.4116+.0175 
7.3250+ .0304 
7.1768 + .0147 
7.3713 .0096 
Proportions. 
p. ct. 
77.9436 + .1156 
78.0021 + .1128 
77.1389 + .2106 
77.9412 + .1095 
77.8946 + .0629 
Statistical comparison of annual series. 
Length aper- 
ture + length 
shell, propor- 
tions. 
p. ct. 
51.9924 .0785 
51.5129 .0801 
51.8750 .1386 
51.5573 + .0657 
51.6967 + .0411 
58.5000 + .7154 
59.0000 = .3954 
58.4474 .3705 
9.6500+ .0572 
9.1000 + .1262 
9.4474+ .0790 
7.6000 + .0533 
7.0750 .0906 
7.3947 + .0638 
58.2998 + .0528 
9.4632+.0117 
STANDARD DEVIATION. 
2.2509 + .0587 
2.3024+ .0719 
2.3829 + .1339 
2.3284 + .0594 
2.3977 + .0377 
0.5023 + .0146 
Shell. 
Group. No. 
Length. Width. 
mm. mm. 
Plain, 1906....| 266 | 18.7493+.0407} 10.9263 + .0200 
1907....| 233 | 18.4092 .0428| 10.7243 .0203 
1908. 72 | 18.2625+.0729] 10.6195+.0311 
1909. 349 | 17.8368 .0320} 10.4352 .0167 
bt, alll, cooue 920 | 18.2789 .0225) 10.6648 .0112 
Banded, 1906. . 8 | 18.7250 .1326] 10.9750+ .0682 
1908. . 8 | 17.6375+.3501| 10.4250+.0858 
Banded, all yrs} 19 | 18.3184 .1396] 10.7105+.0741 
/Ni\y 065 SOURS 939 | 18.2797 + .0222) 10.6657+.0111 
Plain, 1906... .| 266 0.9835+.0287| 0.4838+.0141 
1907... .| 233 -9689 + .0302 4607 + .0144 
OOS Mrs 2 -9171+.0515 -3911+.0220 
1909....| 349 -8862 = .0226 .4620=.0118 
Plain, all...... 920 1.0117+.0159 .5052 + .0079 
Banded, 1906. . 8 .5562 = .0937 .2861 + .0482 
1908.. 8 1.4682 + .2475 .3597 = .0607 
Banded, all yrs.) 19 -9020+=.0987| .4789+.0524 
IN cide Come 939 1.0096 = .0157 .5047 = .0078 
ee ee ene we, | ee ee Me peewee ia ee eee bl Soe ll VA ene 
3.0000 + .5058 
1.6583 + .2796 
2.3945 + .2620 
7.3718 .0097 
0.3982 + .0116 
78.2500 + .6503 
78.0000 + .6080 
78.0789 + .3960 
51.5000 + .3770 
$1.3750+.2780 
51.5000 + .2130 
77.8983 + .0621 
51.6927 + .0405 
2.7961 + .0817 
1.8983 + .0555 
2.3977 = .0373 
1Includes 1 banded snail of 1907 and 2 of 1909. 
4829+ .0151) .3973+.0124) 2.5541+.0798) 1.8139+.0566 
4585+ .0257| .3829+.0215) 2.6498+.1489) 1.7435+.0980 
-4704+.0120) .4082+.0104) 3.0346+.0774| 1.8190+.0464 
-5320+.0083) .4327+.0068) 2.8291+.0445| 1.8473+.0291 
.2398+ .0404) .2236+.0377| 2.7272+.4598] 1.5811+.2666 
.5291+.0892| .3799+.0640} 2.5495+.4299| 1.1659+.1966 
-5103+.0559| .4122+.0451) 2.5592+.2800) 1.3765+.1506 
.5317+ .0083| .4324+.0069) 2.8229+.0439) 1.8391+.0286 
