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. 

 (xcvi, 96). 9 sp. Australia. 



Anoglypta, Martens, 1860. H. Launcestonensis, Reeve. Tas- 

 mania. 



THERSiTES, PfcifTer, 1855. Imperforate, trochiform, solid; spire 

 conical, apex obtuse ; whorls five-and-a-half, flat, the last cari- 

 nated, with flattened base ; apei^ture obliquely subrhombic, 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 s^^bangulate at the periphery, umbilical 

 region impressed, slightly deflected at the aperture, constricted, 

 gibbous ; aperture irregular, sinuately triangular ; peristome flli- 

 formly callous, slightly expanded, columellar margin straight, 

 tuberculate in the middle. H. fringilla^ Pfr. 3 sp. Australasia. 

 CHLORiTis, Beck, 183t. (Erigone, Albers, 1850. Semicornu, 

 Klein, Ads., 1855.) Shell rather solid, somewhat planorbiform, 

 globosel}^ depressed, profoundly umbilicated, concave above and 

 below ; spire enveloping ; last whorl large, subcylindrical, 

 anteriorly much deflected ; aperture obliquely semioval ; peris- 

 tome a little thickened, shortly reflected, its extremities ap- 

 proaching. iiT. wnywZtHa, Linn, (xcvi, 91 . 32 sp. Bast 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. C umiingho.mi, Gray. 3 sp. 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. 

 11. sepulcraliH, Per. (^xcvi, 92). 30 sp. Madagascar, Southern 

 Africa. 



- OBBA, Beck, 1831. Shell umbilicate, ovate-globose or orbicu- 

 larly depressed, frequently angulate, apex very obtuse; whorls 

 4^-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^ Per. 

 (xcvi, 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, 



