38 BOOK OF SPECIES. 
AURICULA. 
Sub-oval, or ovate-oblong ; mouth longitudinal, very 
entire at the base; above narrowed, and the 
margins disunited ; pillar with one or more 
plaits ; lip either reflected, or simple and acute. 
* Lip reflected. 
A. miIp&. Ovate-oblong, very thick, decus- 
sated, granular above, white, covered with a chest- 
nut-brown epidermis; spire short, conoid ; aper- 
ture narrowed in the centre; pillar with two 
mats. 3. W. ¥9. 1. 
A. supa. Oblong, cylindraceous, conic, 
thick, most minutely decussated and granulated, 
fulvous, white ; aperture narrowed in the centre ; 
pillar with three plaits ; smaller than the last. W. 
19. 2. 
A. GLABRA. Ovate-oblong, smooth, per- 
forated, ventricose in the middle, the apex ob- 
tuse, yellowish white, mottled and streaked with 
brown ; whorls broad, rounded ; mouth narrowish, 
ovate ; pillar with a large plait; lips thickened, 
reflected, and white. 14. W. 19. 5. 
A. LEPORIS. Ovate-conic, depressed at the 
base, perforated, white, with clouded tawny fiam- 
mules and decussated striz, impressed at the 
sutures; mouth with both lips widely reflected ; 
pillar with one plait. 13. W. Sup. 8. 79. 
