70 TERRESTRIAL MOLLUSCA INHABITING SOCIETY ISLANDS. 
P. stouma, Pease. Plate ITI, fig. 58 
Partula stolida, Pease, Amer. Jour. Conch., 1866, p. 198; Proc. Zool. Soc., 1871, p. 473. 
Pfeiffer, Mon, Hel., viii, p. 195. (Helena) Hartman, Cat. Part., p. 10; Obs. Gen. Part., 
Bul. Mus. Com. Zool., ix, p. 187. 
Partula Vanikorensis, Carpenter (not of Quoy and Gaimard), Proc. Zool. Soc., 1864, p. 675. 
I took a few examples of this ground species about two miles up Papenoo valley, 
on the northeast coast of Tahiti. They were all found lurking among the roots of 
ferns. When Mr. Pease described it, he gave the habitat “Tahitian archipelago,” 
and in his list of Polynesian land shells (Proc. Zool. Soc., 1871), he erroneously cites 
“ Raiatea” as its locality. 
Unfortunately I have only three examples before me, so I cannot decide on its 
variation. All my duplicates, which were acquired by Mr. Pease, were very uniform 
in shape. It may be described as an elongate-ovate, rather thin, dull brownish or 
olive-brown shell, 18 to 20 mill. in length by 9 to 104 in diameter. The spire which 
comprises half the length of the shell is more swollen than in the elongate dextral P. 
Otaheitana. ‘The parietal region is usually toothed, and the peristome is thinner, not 
so much reflected, more flattened and oblique. No banded examples occurred. 
Dr. Hartman gives the wrong locality. The locality is rightly indicated on his 
chart. 
P. ATTENUATA, Pease. 
Partula attenuata, Pease, Proc. Zool. Soc., 1864, p. 672; 1871, p. 473. Pfeiffer, Mon. Hel., 
vi, p. 156. Schmeltz, Cat. Mus. Godeff., v, p. 92. Gloyne, Quar. Jour. Conch., i, p. 337. 
(Pasithea) Hartman, Cat. Part., p. 11; Obs. Gen. Part., Bul. Mus. Com. Zool., ix, p. 179. 
Partula gracilis, Pease, Amer. Jour. Conch., 1866, p. 197; 1867, p. 81, Pl. I, fig. 3. Binney, 
Proc. Acad. Nat. Sci. Phil., 1875, pp. 244, 247, Pl. XIX, fig. 6 (part of jaw). Pease, 
Proce. Zool. Soc., 1871, p. 473. Paetel, Cat. Conch., p. 104. 
Partula amabilis, Carpenter (not of Pfeiffer), Proc. Zool. Soe.. 1864, p. 675. 
Partula Carteretensis, Reeve (not of Quoy and Gaimard), Conch. Icon., sp. 18, Pl. IV, 
fig. 13. Schmeltz, Cat. Mus. Godeff., iv, p. 72. 
This small species, which has an extensive range, occurs in the upper portions 
of all the central valleys on both the east and west sides of Raiatea. It is more 
abundant in Toloa and Hapai valleys than elsewhere. Owing to its peculiar habit of 
living on the foliage near the tops of trees, it easily escapes observation. It occurs 
more rarely at Tahiti, where it has, also, a wide range, and, like the Raiatea shells, 
is confined to the upper portions of the valleys. 
When we take into consideration its peculiar habit of concealment in the tops of 
trees, and its range restricted to the more elevated portions of the valleys, so contrary 
to the habits of other species, it is really remarkable to find it inhabiting two remote 
islands, especially as all the other species have a very limited range. It does not occur 
at ‘Tahaa, which is only four miles from Raiatea, and enclosed in the same encircling 
