104 TERRESTRIAL MOLLUSCA INHABITING SOCIETY ISLANDS. 
H. minura, Sowerby. 
Helicina minuta, Sowerby, Proc. Zool. Soc., 1842, p. 7; Thesaur. Conch., p. 13, Pl. I, figs. 
40, 41. Pfeiffer, Mon. Pneum., i, p. 391. Chemnitz, ed. 2d, p. 54, Pl. IV, figs. 24-27. 
Gray, Cat. Phan., p. 281. (Pachystoma) H. and A. Adams, Gen. Moll., ii, p. 285. Pease, 
Proc. Zool. Soc., 1871, p. 476. Schmeltz, Cat. Mus. Godeff., vi, p. 99. Garrett, Proc. 
Acad. Nat. Sci. Phil., 1879, p. 29. 
Helicina discolor, Muhlfeldt, MS., Anton, Vers., p. 53. (Ex. Pfeiffer.) 
Helicina flammeata, Muhlfeldt, MS.,1.c. (Ex. Pfeiffer.) 
This small species is confined to Tahiti and Moorea, where it lives beneath decaying 
vegetation. 
Sowerby’s type specimens were collected by Cuming at Rurutu = “ Oheatora,” 
one of the Austral Islands. 
Some examples exhibit the delicate pilose fugacious striz as mentioned in my 
remarks on inconspicua and jlavescens. The color is reddish brown, straw-yellow, 
corneous or dull reddish. 
Major diam. 45 mill. 
H. piscorpEA, Pease. Plate III, figs. 67, 67 a, 67 6. 
Helicina discoidea, Pease, Amer. Jour. Conch., 1867, p. 226; Proc. Zool. Soc., 1871, p. 476. 
Pfeiffer, Mon. Pneum., iv, p. 286. 
Helicina albolabris, Carpenter (not of Homb. and Jaeq.), Proc. Zool. Soc., 1864, p. 673. 
A somewhat scarce species, found only at 'Tahaa, where it lives on the ground in 
the lowland forests. 
When Mr. Pease described this species he gave the correct locality; but in his 
catalogue of Polynesian land shells he gives the wrong habitat, “Tahiti,” where it 
does not occur. 
It has the sulcate base of corrugata, but is more depressed, and the upper surface 
of the whorls is more or less corrugated by coarse transverse ribs or undulations. 
The periphery is carinated, and the color is dull reddish brown, rarely pale yellowish 
horn-color. 
H. susrura, Pease, MS. Plate III, figs. 68, 68 a, 68 0. 
Helicina subrufa, “ Pease,” Carpenter, Proc. Zool. Soc., 1864, p. 676. 
Helicina minuta, Carpenter (not of Sowerby), 1. c. 
Helicina turbinella, *‘ Pease,’ Carpenter (not of Pfeiffer), 1. e. 
Shell depressly conoid, rather thin, somewhat shining, faintly striated; color 
variable ; reddish brown, horn-color, lemon-yellow, rarely with a dorsal reddish band ; 
spire more or less depressly conoid, subacute ; suture linear; whorls 4-45, convex or 
flatly convex, rather rapidly increasing, last one somewhat depressed, not descending 
in front, rounded or obscurely angulated on the periphery ; base flatly convex ; aperture 
very oblique, subtriangular-ovate; peristome slightly expanded, sometimes slightly 
receding above the periphery, obtusely angulate at its junction with the short receding 
columella ; basal callus thin, concolored. 
Major diam. 45-6, height 3-34 mill. 
