60 TERRESTRIAL MOLLUSCA INHABITING SOCIETY ISLANDS. 
It may be characterized by its elongate-ovate form, rather thin texture, constant 
parietal tooth, planulate-conical spire, which equals half the length of the shell, pale 
luteous color, with darker apex. It is always sinistral, and the white expanded lip 
is rather thin and moderately incrassated. 
A variety with three narrow pale brown revolving bands is not infrequent. 
It is closely related to some of the sinistral forms or varieties of P. Otaheitana, 
particularly with Pease’s P. crassa, which, though of the same shape, is more solid, 
rougher, and the fine crowded spiral incised lines which extend over the whole surface 
of the former are nearly obsolete on the latter. 
P. rormosa, Pease, MS. Plate IIT, fig. 49. 
Partula formosa, Pease (Mus. Pease). (Astraa) Hartman, Cat. Part., p.8; Obs. Gen. Part., 
Bul. Mus. Com. Zool., ix, pp. 182, 191. 
The metropolis of this very distinct species is in Fatimu, or on the southwest part 
of Raiatea. It occurs in vast numbers on bushes on the lowlands near the seashore, 
becoming more scarce inland, where it is found associated with P. Hebe, var. bella. 
It ranges north as far as Vaiau valley, becoming less and less abundant as the 
distance increases from its specific centre. It may be characterized as follows :— 
Shell large, imperforated, solid, clongate-ovate, striated, shining, pale yellowish 
white, straw-yellow or fulvous; spire conical, with nearly flat outlines, spirally striated 
with fine, crowded, incised lines, half the length of the shell, and frequently tinged 
with rose-red ; suture slightly impressed, margined with a rugose, white line; whorls 
five and a half, flattened, the last one large, convex; aperture oblong, subvertical, 
obauriform ; peristome white, rather widely expanded, declivous, external margin 
angularly ridged, inner margin strongly labiated, acutely dentate, and contracted 
above the denticle; parietal region thinly glazed, edentate; columellar lip closely 
appressed over the umbilical region. 
Length 25, diam. 13 mill. 
Its large size, edentate parietal region, sharp labial tooth and closed umbilicus will 
readily distinguish it. It is never omamented with bands. 
P. cALurera, Pfeiffer. Plate III, fig. 82. 
Partula callifera, Pfeiffer, Proc. Zool. Soc., 1856, p. 333; Mon. Hel.,iv, p.511. Carpenter, 
Proc. Zool. Soc., 1864, p. 675. Pease, Proce. Zool. Soc., 1871, p. 473. (Astrea) Hartman, 
Cat. Part., p. 8; Obs. Gen. Part., Bul. Mus, Com. Zool., ix, p. 180. 
Partula megastoma, Pease, MS. Schmeltz, Cat. Mus. Godeff., v, p. 92. 
Partula callistoma, Schmeltz, 1. ¢., p. 207; vi, p. 81. 
A well-characterized species, restricted to the higher portion of Haamoa valley, 
on the east coast of Raiatea, where it is not uncommon on foliage. 
It may be easily determined by its creamy white color, yellow apex, constant 
parietal tooth, inflated body-whorl, oval or rounded “ key-hole” aperture, conspicuous 
labial tooth and the total absence of epidermis in the adult shells, It is never banded. 
