ERRATA. 
Pace 2. Achatinella. for Sow. read Sw. Swainson. 
3 Alatz, omitted a comma between Apporhais and Petiver. 
13. Omitted, BIVALVE. A shell composed of two equal or 
nearly equal parts, turning upon each other by means of 
ahinge. The Bivalves compose the class Conchifera, 
Lam. 
31. For Crenatuta, read Crenatula; for Mityloides, read Myti- 
loides. 
