434 Mr. R. J. L. Guppy on the 7 errestrial 
striate by lines of growth; spire raised, with a pointed apex ; 
whorls 5, moderately convex, flattened beneath; suture some- 
what crenulate, slightly descending ; aperture rather small, as 
broad as high; peristome narrowly reflexed. Operculum pale 
horn-coloured. 
A species akin to H. Dysonz, but without colour-bands. It 
has a more convex form and a flatter base than H. barbata 
(Guppy), and in the former of these particulars it is more like 
some examples of H. foveata, Pf. : ; 
17. Helicina humilis, n. sp. 
Testa orbiculato-depressa, lineis incrementi regulariter et dense 
striata, pallido-fusca ; spira brevis, depressa ; apex vix acuminatus; 
anfr. circa 4, carinati, superne applanati, ultimus paulo productus; 
apertura obliqua, semiovata; columella brevis, in nodum termi- 
nans ; callus basalis amplus, tenuis, leviter circumscriptus. 
Alt. 4 millim., lat. 7. . 
Operculum corneum, ad marginem rubescens. 
A depressed pale-fuscous Helicina, striate obliquely by very 
close and regular lines of growth; whorls about 4, flattened 
above and carinate on the periphery ; aperture oblique, semi- 
ovate; peristome somewhat thickened and dilated. 
Allied to H. velutina and H. subfusca, but generally smaller 
and more obscurely coloured. Most examples, though living, 
have a weathered appearance, which exhibits the close stria- 
tion very plainly. It may possibly prove to be a marked 
variety of H. velutina. 
18. Helicina velutina, n. sp. 
Testa orbiculato-depressa, oblique valde striata, rubro-brunnea, epi- 
dermide velutina induta; epidermis decussata, pubescentia in 
ordinibus punctorum exiguorum disposita; spira brevis, apex 
breviter acuminatus; anfr. 5, vix convexi, ad peripheriam cari- 
nati, carina distincte lirata lineis pubescentibus ; apertura obliqua, 
semiovata ; peristoma parum incrassatum et expansum ; columella 
in nodum distincte terminans; callus basalis amplus, circum- 
scriptus. 
Alt. 5 millim., lat. 84. 
Operculum tenue, corneum, margine rubescente. 
Shell depressed, somewhat strongly striate obliquely, dark 
brownish red, covered with a velvety epidermis, whieh is de- 
cussate, the pubescence disposed in rows of minute dark points; 
spire short, apex somewhat pointed ; whorls five, koslit on the 
periphery, the keel bearing two or three distinctly marked 
spiral lines of pubescence ; base little convex, very decidedly - 
decussate. | 
A species somewhat like H. subfusca, but distinguished by 
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