HELICINID A. 279 
script callus; peristome simple, shortly expanded, with the 
basal margin nearly rectilinear, somewhat toothed at its junc- 
tion with the columella. Operculum thin, horny. Height 5, 
greatest breadth 8, least br. 6 mill. 
Helicina sublevigata, Pfr. in Proc. Z. S. 1852; Pneum. Mon. 
p. 384. 
Hab. The New Hebrides Islands. 
103. HELICINA DIAPHANA. 
Shell conoidally-depressed, thin, striated, faintly and obliquely, 
diaphanous, slightly shining, fulvous-yellowish ; spire somewhat 
elevated, with the apex blunt; whorls 4, rather flat, last very 
indistinctly angulated ; columella extremely short, terminating 
in a slight knot, dilated backwards into a circumscript callus, 
which appears granulated under a lens; aperture slightly ob- 
lique, semilunate ; peristome simple, shortly expanded, with the 
basal margin slightly arcuate, passing gradually into the knot 
of the columella. Operculum thin, yellowish. Height 3}, 
greatest breadth 5, least br. 4? mill. 
Helicina diaphana, Pfr. in Proc. Z. S. 1850, p. 98; Pneum. Mon. 
p. 384. 
Hab. Honduras (Dyson). 
104. Henicina KustTERIANA. 
Shell depressed, rather thin, sculptured with oblique striz and 
with more distant, somewhat hairy, elevated, concentric lines, 
diaphanous, pale horn-coloured; spire short, blunt; whorls 
scarcely 34, moderately convex, last depressed, not descending an- 
teriorly, somewhat convex beneath; aperture oblique, semiovate, 
rather triangular; columella extremely short, simple, dilated 
backwards into a glassy, circumscript callus, passing imme- 
diately into the peristome, which is simple, thin, slightly ex- 
panded. Height 25, greatest breadth 43, least br. 4 mill. 
Helicina Kisteriana, Pfr. in Z. f. If. 1848, p. 88; Je. n. 64, p. 50, 
t. 9, f. 22-25; Pnewm. Mon. p. 385. 
Hiab. Tahiti. 
105. Henicina LovisrapEnsIs. B. M. 
Shell conoidally-depressed, rather solid, shining, spirally striated 
under a lens, reddish-horn-coloured ; spire conoid-convex, rather 
pointed ; whorls 4, moderately convex, last rounded, somewhat 
depressed,’ slightly grooved and callous beneath, behind the 
short columella; aperture oblique, semiovate, rather triangular ; 
peristome simple, thin, with both margins narrowly expanded. 
