58 TERRESTRIAL MOLLUSCA INHABITING SOCIETY ISLANDS. 
black, is not infrequent. he lip is white, and the apex frequently tinted with purple- 
black. 
They vary considerably in shape, as the following measurements will prove :— 
Length 25, diam. 14 mill. 
Length 25, diam. 12 mill. 
The average dimension is 25 by 13 mill. Out of about 6000 examples I found 
but one possessing the parietal tooth. Hybrids between this species and radiata, 
Jusca and navigatoria are not uncommon. 
On the south end of Tahaa, an island inclosed in the same reef which encircles 
Raiatea, is the headquarters of Pease’s var. subangulata (Pl. III, fig. 79), which has 
spread throughout several valleys. 
As compared with faba, it is smoother, more glossy, thinner, and exhibits different 
color-variations. ‘The type is reddish brown, with a yellowish sutural band, and the 
peristome is purple-brown, frequently spotted with white. A variety with a narrow 
subsutural and subbasal band of a dark chestnut-color on a pale greenish yellow 
eround is not uncommon. Uniform reddish chestnut and pale greenish yellow 
varieties with white lips are frequent. Like the typical faba, it is frequently strigated 
and edentate on the wall of the aperture. 
The specific centre of the var. amanda = ventricosa (Pl. II, fig. 78) is on the 
northeast portion of Tahaa, where it occurs in the greatest profusion, and has migrated 
throughout all parts of the island, except that portion inhabited by var. subangulata. 
In shape it differs none from the latter form, but is frequently dentated on the 
parietal wall, and in some valleys on the north coast, the latter character is constant 
and = dubia, Garr. (Pl. III, fig. 80). The usual color is pale yellowish corneous, 
light or dark fulvous, with a white or flesh-tinted lip. A beautiful variety occurs 
which has a wide, median, reddish chestnut band. A more common variety is found 
with two narrow, reddish chestnut bands. Chestnut-brown varieties are not wcom- 
mon, ‘The rarest variety is fasciated the same as the typical faba. 
P. auricunata, Broderip. 
Partula auriculata, Broderip, Proc. Zool. Soc., 1832, p. 83. Muller, Syn. Test., p. 33. 
Reeve, Conch. Syst., ii, p. 175, figs. 7,8. Jay, Cat. Shells (1832), p.57. Carpenter, 
Proc. Zool. Soc., 1864, p. 675 (part). Paetal, Cat. Conch., p. 104. Pease, Amer. Jour. 
Conch., 1866, p.20. Schmeltz, Cat. Mus. Godeff.,iv, p. 71. (Nenia) Hartman, Cat. Part., 
p- 7, with woodcut; Obs. Gen. Part., Bul. Mus. Com. Zool. ix, pp. 180, 186, 192. 
Partula tabulana, Anton, Verz. Conch., p. 40. 
Partulus auriculatus, Beck, Ind. Moll., p. 58. 
Bulimus auriculatus, Pfeiffer, Symb., i, p. 80; ii, p. 111. 
Bulimus Otaheitanus, Pfeiffer, Mon. Hel., ii, p. 71 (part). 
Partula Otaheitana, Reeve (not of Bruguiére), Conch. Icon., Pl. II, fig. 11a, b. 
Partula robusta, Pease, MS. Coll. Pease, 1863. 
