MUSEUM OF COMPARATIVE ZOOLOGY. 191 



Area polycyma Dall. 



Area glomerula DalL 



Area auriculata Lamarck. 



Area lienosa Say. 



Area retieulata Chemnitz. 



Area Adamsi Shuttleworth. 



Area Noae Linne, var. occidentalis PhilippL 



Area umbonata Lamarck. 



Area ectoeomata DalL 



Area barbata Linng. 



MACRODON Lycett. 



Maerodon asperula DalL 

 Maerodon sagrinata DalL 



Family NUCULID^. 



NUCULA Lamarck. 



Nucula aegeensia Forbes. 

 Nucula eymella Dall. 

 Nucula erenulata A. Adams. 

 Nueula erenulata, var. obliterata Dall. 

 Nueiila Verrillii DalL* 



FAiiiLY LEDID^. 



LEDA Schumacher. 

 Subgenus YOLDIA Morch. 



Yoldia solenoides Dall. 

 Yoldia liorhina Dall. 



Subgenus LEDA s. 8 



Leda Carpenter! DalL 



Leda messanensis Seguenza. 



Leda solidula Smith. 



Leda vitrea D'Orbigny, var. cerata Dall. 



Leda eoneentriea Say.* 



Leda acuta Conrad. 



Leda solidifacta Dall. 



Leda Verrilliana Dall.* 



