HELICID^. 45 



the lips united by a shining callus ; coluraellar lip with a tooth. 

 H. Geres, Pfr. 



Phania, Albers, 1860. Shell umbilicated or imperforate, len- 

 ticularly depressed, acutely carinate ; whorls 4^-5, the last 

 shortly descending anteriorl}^, base convex; aperture irregularly 

 triangular or rhomboidal ; peristome thickened, expanded ; 

 columellar margin tuberculately dilated, the base reflected, 

 appressed. H. pyrostoma, Fer. (xcvi, 88). 7 sp. East Indies. 



Planispira, Beck, 183Y. (Pusiodon [part], Swainson, 1840.) 

 Shell with open (rarely covered) umbilicus, orbicularly de- 

 pressed ; spire plane or immersed in the middle; w^horls 4-5, 

 the last large, declining in front ; aperture obliquely oblong- 

 ovate ; peristome acute, widely expanded, reflected, margins 

 approximating, the basal margin sometimes tuberculate. H. 

 coluber, Beck (xcvi, 90). 26 sp. East Indies. 



Philina, Albers, 1850. (Pusiodon, Swains., 1840. Obbina, 

 Semper, 1873.) Shell umbilicate, orbicularly depressed, apex verj'^ 

 obtuse; last whorl deflected in front; aperture oblique or hori- 

 zontal; peristome thickened, reflected, the margins joined by a 

 callus, which impinges on the umbilicus. H. planulata, Lam. 



GEOTROCHtJS, Beck, 1831. Shell imperforate or perforation 

 covered, trochiform, with elevated spire and flattened whorls; 

 last whorl carinated or angular, base subplane ; aperture angular, 

 very oblique ; superior lip slightly reflected or expanded, inferior 

 lip thicker and reflected. H. Ferussaci, Lesson (xcv, 73). 131 

 sp. Solomon and Louisiade Is., New Guinea, Australia. 



Pseudopartula, Pfr., 1855. H. galericulum, Mouss. Java. 



ACAVUS, Montfort, 1816. (Otala, Schum., 1817.) Shell imper- 

 forate, globose-turbinate, oblique ; whorls 3-4, rapidl}^ increasing, 

 the last ventricose ; aperture oblong, oblique; columella oblique, 

 wide, covered by an excavated callus ; peristome thick, widely 

 reflected, the extremities united b}^ a shining callus. H. heema- 

 stoma, Linn, (xcv, 75). 8 sp. Ceylon. 



ALBERSiA, H. Adams, 1865. H. granulata, Quoy. 3 sp. New 

 Guinea. 



HELICOPHANTA, Bcck, 1837. (Liostoma, Swains., 1840. Eury- 

 cratera, Ads., 1855.) Shell with open or covered umbilicus; 

 thin, ovately oblong, spire short, scarcely elevated ; whorls 3.j-4, 

 very rapidly increasing, the last inflated ; aperture large, 

 obliquely oblong-ovate ; lip subexpanded, slightly' thickened, 

 margins joined by a usually thin callus, columellar margin 

 dilated, reflected. H. magnifica, Fer. (xcvi, 82). 9 sp. Mada- 

 gascar. 



PANDA, Albers, 1860. (Eurycratera, Ads., 1855, part.) Shell 

 globosely ovate, thin, striate, granulately decussated hj spiral 

 lines; spire obtuse, whorls 3-4, rapidly increasing, the last large, 

 swollen ; aperture scarcely oblique, rounded-ovate ; peristome 



