62 TERRESTRIAL MOLLUSCA INHABITING SOCIETY ISLANDS. 
They vary some in size and length of spire. The nearest allied species is P. 
planilabrum, which is larger, differently colored and inhabits a different station. I 
have found several hybrids between this species and P. faba, var. subangulata, Pease. 
In referring to the synonymy it will be observed that Carpenter and Cuming 
regarded it as a variety of Reeve’s P. solidula. Mr. Pease, accepting their views, 
catalogued it by the latter name in his list of Polynesian land shells (P. Z. S., 1871, 
p. 473). Both Reeve’s and Pfeiffer’s description, as well as Reeve’s figure, refer to a 
more robust species than virginea. Moreover, neither of the above authors allude to 
the parietal tooth, which is seldom absent in the latter species. Reeve’s figure very 
nearly coincides with Pease’s P. compacta, but that species is always dentate. Hybrids 
between P. faba, var., and virginea, which are edentate, very closely resemble Reeve’s 
figure of solidula. 
P. arautA, Pease. PI. III, fig. 57. 
Bulimus argutus, Pease, Proc. Zool. Soc., 1864, p. 670; 1871, p. 473. Pfeiffer, Mon. Hel., 
vi, p. 46. 
Partula arguta, Schmeltz, Cat. Mus. Godeff., v, p. 92. Martens and Langk., Don. Bismark., 
p. 55, Pl. III, fig. 7. (#cho) Hartman, Cat. Part., p. 11 (with woodcut) ; Obs. Gen. Part., 
Bul. Mus. Com. Zool., ix, p. 179. 
The metropolis of this very fragile species is in the upper portion of a mountain 
ravine, on the west coast of Huaheine, where it is rather common on the leaves of low 
shrubs and ferns. It occurs much more rarely in a neighboring valley south of its 
specific centre. Mr. Pease’s habitat “Tahiti,” as given in his list of Polynesian land 
shells, is decidedly wrong. 
Though referred by the above author to the genus Bulimus, it is, nevertheless, a 
true Partula. The animal, which is viviparous, has very long, slender, ocular tentacles, 
long lance-pointed foot, and that portion of the animal occupying the whorls of the 
translucent shells is beautifully maculated with black and white spots on grayish 
yellow ground. The shell, which is very uniform in all its specific characters, may be 
readily distinguished by its very thin pellucid texture, ovate form, abbreviated spire, 
turgid body-whorl, uniform pale yellowish horn-color, thin, slightly expanded lip and 
large simple aperture. 
P. BILINEATA, Pease. 
Partula bilineata, Pease, Amer. Jour. Conch,, 1866, p. 201; 1857, p. 81, Pl. I, fig. 10; Proc. 
Zool. Soc., 1871, p. 478. Binney, Proc. Acad. Nat. Sci. Phila., 1875, pp. 245, 247, Pl. XIX, 
fig. 10 (anatomy). Pfeiffer, Mon. Hel., viii, p. 195. Gloyne, Quar. Jour Conch., i, p. 338. 
Schmeltz, Cat. Mus. Godeff., vi, p. 81. (Clytia) Hartman, Cat. Part., p. 8; Obs. Gen. 
Part., Bul. Mus. Com. Zool., ix, pp. 180, 196. 
Partula auriculata, Carpenter (not of Broderip), Proce. Zool. Soc., 1864, p. 675. 
This beautiful and well-marked species is confined to Faa-apa valley on the east 
