Sect. ARCACEA Lam. 
Genus Arca Lam. 
Arca Noe Linn. Lam. Rrocc. 
Ast. Taur. (v. in Med. et Oc.) 
— Tetragona Poli. 
( A. Noe Var. Chemn. ) 
Taur. (v. in Medit. et alibi) 
— Ovata Gmel. Lam. 
( A. Nivea Chemn. ) 
Ast. Taur. (v. in mari rubro) 
— Rarbata Linn. Lam. Rrocc. 
Ast. Taur. (v.in Med. et Oc.) 
— Cancellaria Lam. 
Ast. 
— Antlquata Lin. Lam. Poli. 
Ast. (v. in Oc. Afr. Medit.) 
— Diluvii Lam. 
( Arca Antiquata Rrocc. ) 
Ast. Taur. (v. in m. rub. Med.) 
— Mytiloides Rrocc. 
Ast. 
— Pectinata Rrocc. 
( A. Diluvii Rast. ) 
Ast. 
— Affinis Genl, 
Ast. Taur. 
— Polifasciata E. Si 
( A. Pisolina Mich. ) 
Taur. 
Genus Pectunculus La< 
Pectunculus Clycimeris Lam. 
Ast. Taur. (v. in Med. Oc Atl.) 
— Pilosus Linn. Rr. (Arca) 
(P. Puivinatus Lam.) 
Ast. Taur. (v. in Med. et Oc. Atl.) 
— Violacescens Lam. 
(Arca Insubrica Rrocc.) 
Ast. ( v. in Medit. ) 
Pectunculus Nutnmarius Lam. 
( Arca Brocc. ) 
Ast. (v. in Medit.) 
— Inflatus Rrocc. (Arca) 
Ast. 
— Modiolus Ron. 
Taur. 
— Cancellatus Mich. 
Taur. 
Genus Trigonocelia 
NlST. Gal. 
Trigonocelia Aurita Nist. Gal. 
( Arca Rrocc. ) 
Taur. Ast. 
Genus Nucula Lam. 
Nucula Rostrata Lam. 
( Arca Mart. Rrlg. ) 
Ast. ( v. in mari Balt. ) 
— Nicobarica Lam. 
Ast. ( v. in Oc. Ind. ) 
— Margaritacea Lam. 
( Arca Nucleus Linn. Br. ) 
Ast. (v. in Oc. Eur. et Med.) 
— Emarginata Lam. 
(Arca Pella Rrocc.) 
Ast. ( v. in Medit. ) 
— Costulata Ron. 
Ast. 
— Taurinia Gene. 
Taur. 
Sect. CHAMACEA Lam. 
Genus Chama Linn. 
Chama Macerophylla Chemn. 
( C. Laxarus Lam. ) 
Ast. (v. in Oc. Amcr.) 
