60 
terrestrial mollusca inhabiting society 
ISLANDS. 
. 1 * • A plouoatc-ovate Ibrm, ratlier thin texture, constant 
parieLZS p"Licaf .pire, which c,„ah half the length of the shell pale 
Leous color, with darker apex. It is ah.aijs sinistral, and the wlnte expanded hp 
is rather thin and moderately incrassated, . ■ n 
V variety with three narrow pale brown revolving bands is not nifrcHnent 
It is closely related to some of the sinistral forms or varieties of /. Otahextarm, 
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 tlie latter. 
P. FORMOSA, Pease, MS. Plate III, fig- 49. 
Parlula formom, Pease (Mas. Pease). {Asiraea) Hartman, Cat. Part., p. 8 ; Obs. Gen. Part, 
Bui. Mus. Cora. Zool., ix, pp. 182, 191. 
'fhe metropolis of this very distinct species is in Fatimu, or on the southwest part 
of Kaiatea. It occurs in vast numbers on bushes on the lowlands near the seashore, 
liecoming more .scarce inland, where it is found associated with J\ Hehe, var. hella. 
It ranges north as far as A'aian talley, becoming less and less abundant as the 
distance increases from its specific centre. It may hc’ characteri/cd as follows : — 
Slu'll large, imperforated, solid, elongate-ovate, striated, shining, pale yellowisli 
white, straw-yellow or ful\ ous ; spire conical, with nearly fiat outlines, sjiirally striated 
with fine, crowded, incised lines, half the length of the shell, and frequently tinged 
with rose-n'd ; suture slightly impressed, margined with a rugose, white line; whorls 
five and a half, fiattc'ued, the last one large, convex ; aperture oblong, subvertical, 
obauriform ; pf'ristome \\ bite, rather Avidely expanded, declivous, external margin 
angidarly ridged, inner margin strongly labiated, acutely dentate, and contracted 
above the denticle; jiarietal region thinly glazed, edentate; columellar lip closely 
appressed over tlie umbilical region. 
Lengtli 25, diam. 18 mill. 
Its large .size, edentate parietal region, sharp labial tooth and closed umbilicus will 
readily distinguisli it. It is neAer ornamented Avith bands. 
P. CAI.LIFERA, Pleilibr. Pliite III, fig. 82. 
ParluJa callifera, Pfeiffer, Proc. Zool. Soc., 1856, p. .333; Mon. Hel.,iv, p.51I. C.arpenter, 
Proc. Zool. Soc., 1864, p. 675. Pease, Proc. Zool. Soc., 1871, p. 473. {Astrsea) Hartman’ 
Cat. Part., p. 8 ; Obs. Gen. Part., Bui. Mus. Com. Zool., ix, p. 180. 
Fartula megasioma, Pease, MS. Sehmeltz, Cat. Mus. Godeff., v, p. 92. 
Partula callistoma, Sclimeltz, 1. c., p. 207 ; vi, p. 81. 
well-characterized species, r.'stricted to the higher portion of Haainoa valley, 
on the east coast of Haiatea, Avhere it is not uncommon on foliage. 
It may be easily toermined by its creamy white color, yellow apex, constant 
parietal tooth, inflated body.whorl, oval or rounded .‘keyhole” a, torture, conspicuous 
labial tooth and the total absence of epidermis in the adult shells. It is never banded. 
