44 HELICID®. 
the last large, inflated, descending ; aperture semioval ; lip thick- 
ened, shortly reflected, white, margins joined by a thin callus; 
columellar lip strict, callous, subtuberculate. H. pomum, Pfr. 
(xevi, 96). 9sp. Australia. 
Anoglypta, Martens, 1860. H. Launcestonensis, Reeve. Tas- 
mania. 
THERSITES, Pfeiffer, 1855. Imperforate,trochiform, solid; spire 
conical, apex obtuse; whorls five-and-a-half, flat, the last cari- 
nated, with flattened base; aperture obliquely subrhombie, sinu- 
ously rostrate in front; peristome somewhat thickened, shortly 
expanded, the margins callously joined. H. Richmondiana, Pfr. 
Australia. 
MEROPE, Albers, 1850. Shell imperforate, depressly globose, 
slightly striate, fasciate, spire very obtuse; whorls four-and-a- 
half, convex, the last subangulate at the periphery, umbilical 
region impressed, slightly deflected at the aperture, constricted, 
gibbous ; aperture irregular, sinuately triangular; peristome fili- 
formly callous, slightly expanded, columellar margin straight, 
tuberculate in the middle. H. fringilla, Pfr. 3 sp. Australasia. 
cHLORITIS, Beck, 1837. (Erigone, Albers, 1850. Semicornu, 
Klein, Ads., 1855.) Shell rather solid, somewhat planorbiform, 
globosely depressed, profoundly umbilicated, concave above and 
below; spire enveloping; last whorl large, subceylindrical, 
anteriorly much deflected; aperture obliquely semioval; peris- 
tome a little thickened, shortly reflected, its extremities ap- 
proaching. H. ungulina, Linn. (xcvi, 91. 82sp. East Indies. 
PEDINOGYRA, Albers, 1860. Shell widely umbilicated, depressed, 
solid, spire flattened, obtuse ; whorls 5—6, the last large, deflected 
anteriorly, dilately protracted; aperture nearly horizontal, 
elongate-lunate ; peristome expanded, margins approaching, the 
basal margin reflected. H. Cunninghami, Gray. 3sp. Australia, 
New Guinea. 
AMPELITA, Beck, 1837. Shell widely umbilicated, rather thin, 
depressed ; whorls four or five, the last oblique above, deflected 
at the aperture; aperture oblique, oval; peristome reflected. 
H. sepuleralis, Fer. (xevi, 92). 30 sp. Madagascar, Southern 
Africa. 
opBA, Beck, 1837. Shell umbilicate, ovate-globose or orbicu- 
larly depressed, frequently angulate, apex very obtuse; whorls 
44_6, the last deflected in front; aperture oblique or horizontal, 
oblong-ovate or elliptical; peristome thickened or reflected, 
joined by a callous margin; basal margin dilated, usually tuber- 
culate within, impinging on the umbilicus. H. mamilla, Fer. 
(xevi, 89). 40 sp. East Indies, Philippines. 
Janira, Albers, 1850. Shell umbilicated, conoidal, sub- 
globose, with obtuse apex; last whorl descending in front; 
aperture obliquely subrotund; peristome thickened, reflected, 
