SHELLS OF SOUTH AMERICA. 73 
LL. Guaraniana and L. Vilardeboena have rudimentary corm- 
pressed lateral teeth and a thick hinge-margin. 
LL. quadrisuleata (only a variety of L. divaricata), L. semi- 
reticulata, L. Portesiana and L. Patagonica have no lateral teeth 
and a thin cardinal margin; these have all an external marginal 
cartilage. 
LL. erypteila has an internal cartilage and no lateral teeth. 
647. Erycrina Peririana, Recluz, d’Orb. Voy. v. 589. 
Peru; Callao. 
Fam. 4. CARDIDA. 
648. CARDIUM SERRATUM, Linn., d’Orb. Voy. v. 590. B.M. 
Cardium levigatum, Gmelin. 
Cardium citrinum serratum, Chemn. 
Brazils; Rio de Janeiro (Voy. no. 227). 
649. Carptum muricatuM, Linn., d’Orb.Voy.v.591. B.M. 
Brazils; Rio de Janeiro (Voy. no. 28). 
650. Carpium LAMARcKII, d’Orb. Voy. v. 591. 
Cardium Brasilianum, Lamk. 
Brazils. 
651. CaRDIUM MACULOSUM, Wood, d’Orb. Voy. v. 592. 
Cardium multistriatum, Sow. 
Columbia; Santa Elena. 
652. CARDIUM GRANIFERUM, Brod., d’Orb. Voy. v. 
592. 
Ecuador. 
653. CARDIUM BIANGULATUM, Sow., d’Orb. Voy. v. 
592. 
Ecuador; Santa Elena. 
654. Carp1ium consors, Brod., d’Orb. Voy. v. 592. 
Ecuador. 
E 
