PLATE LI. 



FIG. II. 

 HELIX AURICULARIA, 



EAR, Or WIDE MOUTH RlVSR SNAIL. 

 GENERIC CHARACTER. 



Aperture of the mouth lunated. 

 **** Ovated, imperforated. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Without umbilicus : a narrow depression on the edge of the pillar 

 lip. Very ventricose, spire short and acute. Aperture very wide. 



Helix Auricularia : testa imperforata ovata obtusa, spira acuta 



brevissima, apertura ampliata. Linn. Sj/st. Nat. 



p. 1250. No. 708. 

 Cochlea testa diaphana anfradtibus quatuor, mucrone acuto brevis- 



simo, apertura acutissima. Linn. F. Suec. I. 



p. 376. A r o..l315. IT. No. 2192. 

 Buccinum pellucidum subflavum, qua'uor spiramm, mucrone acu- 



tissimo, testae apertura omnium maxima. List. 



H. An. Angl. p. 139. tit. 23. tab. 2. jig. 23. 



