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BULLETIN OF THE 
Famiy AVICULIDZ. 
AVICULA Lamarck. 
Avicula atlantica Lamarck. 
Famity MYTILIDA. 
MYTILUS Linné. 
. Mytilus exustus Linné. 
MODIOLA Lamarck. 
Modiola polita Verrill and Smith. 
Modiola opifex Say. 
CRENELLA Brown. 
Crenella decussata Montague. 
MODIOLARIA Beck. 
Modiolaria lateralis Say. 
Famity ARCID. 
LIMOPSIS Sassy. 
Limopsis minuta Philippi. 
Limopsis tenella Jeffreys. 
Limopsis antillensis Dall. 
Limopsis cristata Jeffreys. 
Limopsis aurita Brocchi. 
PECTUNCULUS Lamarck. 
Pectunculus undatus Linné. 
Pectunculus undatus, var. scriptus Born. 
Pectunculus pectinatus Gmelin. 
Pectunculus pectinatus, var. carinatus Dall. 
ARCA Linné. 
Arca pectunculoides Scacchi. 
Arca pectunculoides, var. orbiculata Dall. 
