100 AURICULIDiE. 



9. Auricula ponderosa. 



" Similar to and probably confused with A. Judcs. The aper- 

 ture does not exceed half the length of the shell, which is much 

 thicker than in the other species." (Fer.) 



Bonanni, Recr. Supj)l. f. 3, et Mus. Kirch, f. 412. {Fer.) 

 Auricula ponderosa, Fer. Prodr. p. 102. n. 4. 



Beck, hid. p. 102. n. 3. 



Pfr. Syn. Auric, n. 131 ; Mon. Auric, p. 131. 



Hob. Philippine Islands? (Beck.) 



10. Auricula polita. 



Shell ovate, glandiform, solid, very minutely decussated by 

 slightly wrinMed longitudinal and 'fine spiral strife, white, 

 covered with a chestnut-brownish periostraca ; spire short, con- 

 vexly conic, with the apex blunt, eroded; whorls five and a 

 half, moderately convex, the last forming about three-fourths of 

 the total length, ventricose above, attenuated towards the base ; 

 aperture perpendicular, narrow, sinuate; parietal plaits two, 

 the upper deeply placed, nodiform, the other stronger, rather 

 transverse ; columellar plait imperceptibly twisted, nearly per- 

 pendicular, produced to the base ; peristome straight, thickened 

 within by a white deposit ; right margin sinuate above. Length 

 36, breadth 16 mill. 

 Auricula polita, Metcalfe in Proc. Zool. Soc. 1851, p. 72. 



Pfr. Syn. Auric. n. 132; Novit. Conch, p. 27. n. 45. t. 7. f. 12, 

 13 ; Mon. Auric, p. 132. 

 Ellobium politum, H. and A. Adams in Proc. Z. S. 1854, p. 7 ; 



Gen. rec. Moll. ii. p. 237. 

 Hab. Borneo. 



11. Auricula Chinensis, 



Shell sublimate, ovate-oblong, solid, minutely granulated bv 

 lonoitudinal and spiral striae, fulvous, with chestnut-coloured 

 streaks ; spire conic, blunt ; suture linear, somewhat irregular ; 

 whorls six, rather flat, the last not descending, forming about 

 three-fifths of the total length, rounded at base ; aperture per- 

 pendicular, sinuately semiovate, broader a little above the base ; 

 parietal plaits two, the upper nodiform, the other strong, com- 

 pressed, rather oblique, both somewhat united externally by a 

 pliciform longitudinal callus ; columellar plait strong, twisted ; 

 peristome straight, with the margins united by a thin deposit ; 

 right margin strongly lipped internally, sinuated above ; colu- 

 mellar margin thick, vaulted and reflexed, adnate. Length 28, 

 breadth 14 mill. 



