40 HELICID. 
or globosely depressed ; whorls 4—7, the last anteriorly deflected, 
somewhat angular usually, convex at base, compressed around 
the umbilicus; aperture elliptical-rounded ; peristome more or 
less thickened, reflected, its extremities approaching. #H. cica- 
tricosa, Mull. (xcvi, 95). Tsp. China, Japan. 
AcusTA, Albers, 1860. Shell umbilicate, thin, globose, closely 
striated, shining; last whorl large, rounded; spire subconical, 
aperture scarcely oblique, lunately rounded ; peristome simple, 
acute; columellar margin dilated, reflected. 11 sp. China, 
Japan. H. ravida, Benson. 
SATSUMA, Adams, 1868. Shell globosely conoidal, perforate ; 
lip reflected, the lower portion and base of shell plane. H. Lar- 
gilliertt, Phil. 6 sp. Japan. 
TRACHIA, Albers, 1860. Shell umbilicate, depressed, thin, 
roughened by minute granules; spire scarcely elevated ; whorls 
four, somewhat flattened, the last deflected at the aperture and 
constricted in front; aperture obliquely subcircular; peristome 
thin, expanded, margins approximating, joined by a thin callus. 
H. asperella, Pfr. 22 sp. India, East Indies. 
ANGASELLA, Adams, 1863. H. cyrtopleura, Pfeiffer. 3 sp. 
Australia. 
EURYSTOMA, Albers, 1850. Shell narrowly umbilicated, glo- 
bosely depressed, calcareous; whorls five, the iast convex at base, 
deflected near the aperture; aperture oval, contracted by the 
last whorl; peristome lipped, wide, its extremities approaching 
and joined by a callus; columellar lip straight within, dilated, 
nearly touching the umbilicus. H. vittata, Mull. (xev, 58). 
Ceylon. 
pHasis, Albers, 1850. Shell umbilicated, thin, depressed, 
convex at the base, spire a little elevated ; whorls four, rapidly 
increasing; aperture vertical, oval; peristome simple, sharp; 
columellar lip dilated, reflected. H. Menkeana, Pfr. Cape 
of Good Hope. 
cooHLEA, H.and A. Adams, 1855. Shell more or less globular, 
solid, colored; usually banded; peristome thickened or reflected ; 
aperture rarely dentate. H. aspersa, Mull. 
Odontura, Crosse and Fischer. Shell narrowly umbilicate, 
depressed globular, granulate or hairy ; peristome reflected. Jaw 
with numerous longitudinal ribs and close transverse striz ; 
hinder part of foot with a median serrated keel. H. Ghiesbreghtt, 
Nyst. (xev, 52). Mexico. 
Lysinoé, H.and A. Adams, 1855. (Aglaja, Albers, 1860.) Shell 
umbilicate, orbicularly convex, banded; whorls 45-6, the last 
deeply deflected in front ; aperture broad-lunate, oblique; peris- 
tome thickened, expansively reflected, white, the margins ap- 
proaching ; that of the columella partially covering the umbilicus. 
H, fidelis, Gray (xev, 53). 36 sp. Oregon to Peru. 
