PARTULA OTAHEITANA. 163 
kind is proportionately less numerous in the series of offspring than it is in the whole 
population, or in the group of bearing adults. The excess is not so marked here, 
however, as it is in the colonies described earlier. 
TasLe 104.—Partula otaheitana rubescens, Papetha Valley. 
FECUNDITY. HEREDITY. 
Rec-| No. of] Per cent | No. of | No. of | Total | Average | Average Young, |/Young, Total 
ords.|gravid.| gravid. eggs. | young. |contents.| for all. |for gravid. yellow.| red. ; 
Adults: Adults: 
White.| 10 8 80.0 9 14 23 BoB 2.9 White. . tg 02 0 7 5509 
Yellow} 61 49 80.3 64 55 119 1.9 2.4 Yellow..| 48 7 55 
Red..| 40 35 87.5 41 45 85 Bot 2.4 Red.... 18 27 45 
INUogo060 111 92 82.9 114 | 114 228 2.0 DS) 7 \ Goons 80 34 114 
HAAVINI VALLEY. 
The next representative collection of rubescens was secured in Haavini Valley, 
on the northern side of the peninsula, Taiarapu, where 214 adults were obtained. 
In two valleys of the extreme southwest of Tahiti nui, namely, Utuufai and Faone, 
5 and 2 adults respectively were found, and in Tehoro, on the northwestern part of 
Taiarapu, a single example was collected. These representatives of what must be 
scattered and weak colonies in imminent danger of extinction present no features of 
special interest. 
The colony of Haavini comprises only 7 dark individuals, of a brown-reddish 
color (plate 27, figs. 43 and 44); the “yellow” shells (207 in number) fall into two 
clearly marked subdivisions, in one of which the spire is uniform with the body- 
whorl in color (plate 27, figs. 38 and 39), while in the other a deep tinge grading into 
purple marks the apex (plate 27, figs. 40 to 42). Most of the red shells have the tip 
darkened. 
TaBLeE 105.—Partula otaheitana rubescens, Haavini Valley. 
Mean VALue. 
Shell. Aperture. Length aper- 
Seri ture + length 
eries. 
Yellow, A.... 
Yellow, B.... 
Yellow, all.... 
Yellow, A.... 
Yellow, B.... 
Yellow, all.... 
Length. 
mm. 
19.6945 + .0877 
19.6585 + .0503 
19.6679 + .0888 
19.9643 + .1649 
Width. 
mm. 
11.1000+ .0431 
10.8628=+ .0264 
10.9242 + .0468 
11.2715+.1170 
Proportions. 
p. ct. 
56.3889 + .2410 
55.3432 + .1367 
Length. 
mm. 
10.0778 + .0453 
9.9327 + .0272 
Width. 
mm. 
7.7000 + .0333 
7.6216+ .0199 
Proportions. 
p. ct. 
76.3333 + .2183 
76.7614 .1337 
55.6160 + .2460 
56.5000 =+ .5940 
9.9706+ .0478 
10.3000 + .0545 
7.6421 + .0349 
7.8429 .0757 
76.6497 + .2320 
76.7857 + .4859 
shell, propor- 
tions. 
p. ct. 
51.2777 .1790 
50.5523 + .0987 
50.7415 .1789 
51.5000 + .4088 
19.6776 + .0426 
0.9558 + .0620 
-9225 + .0355 
-9313 + .0628 
-6468 + .1166 
10.9355 + .0228 
0.4698 = .0305 
4842 + .0195 
-4908 + .0331 
-4590 + .0827 
55.6449 + .1188 
9.9813 + .0230 
STANDARD DEVIATION. 
2.6261 + .1704 
2.5078 + .0966 
2.5794 .1739 
2.3299 + .0420 
0.4939 + .0320 
-4986=+ .0192 
5015 + .0338 
-2138+ .0385 
-9250+ .0301 
4939+ .0161 
2.5764 + .0840 
7.6486+ .0169 
76.6542 .1118 
0.3631 .0235 
-3653 + .0141 
-3664+ .0248 
-2969 + .0534 
2.3785 + 1543 
2.4515 + .0945 
2.4318+ .1640 
1.9059 + .3436 
50.7666 .0863 
1.9500+ .1266 
1.8106+ .0698 
1.8752+.1265 
1.6036 .2891 
-4981 + .0163 
-3660+ .0119 
2.4244+ .0790 
1.8718+ .0610 
