FAMILY 4. AURICULACEA. 103 
Pl. CLXXXVI. Fig. 14. 
Heuicina sacra, D’Orbigny, Hist. Cuba. Sowerby, Jun., Thesaurus 
Conchyliorum, pl. 1 and 3. f. 10 and 126. 
Pl. CLXXXVI. Fig. 15. 
Hericina ANTILLARUM, Sowerby, Jun., Proceedings Zool. Soc., 1841; 
Thesaurus Conchyliorum, pl. 2. f. 68 to 70. 
Pl. CLXXXVI. Fig. 16. 
HELIcINA AURANTIA, Gray, Zool. Journ., vol. i. p. 67. pl. 6. f. 8. Des- 
hayes, edit. of Lamarck, vol. viii. p. 161. 
Family 4. AURICULACEA. 
Testa ovata, columella dentata, aut valdé plicata ; apertura longitudinali- 
ter ovali, labro vel incrassato vel simplici. Animal aut aquaticum, 
aut terrestre. 
The genera which we have associated together under the above title, 
in imitation of De Blainville and Gray, were all included by Lamarck 
under the genus Awricula in his family of the Colimacea ; a very nume- 
rous addition of species, however, since his time, has confirmed the pro- 
priety of separating them. The genera Tornatella and Pyramidella were at 
one time included in this family by the learned author of the ‘ Manuel de 
Malacologie ;’ but upon satisfying himself that they were hydrobranchiate 
or water-breathing, and moreover furnished with an operculum, he con- 
sented to remove them. 
The shell of the Auriculacea is for the most part of an oval form, the 
columella being either dentated or strongly plaited ; the aperture is lon- 
gitudinally oval, and the lip is either thickened or simple, often dentated 
within in the same manner as the columella. ‘The animal is either ter- 
restrial or aquatic, and is destitute of any operculum. 
