26 



Mactra stultorum, L. 



Mactra stultorum, v cinerea, Mont. 

 Mactra glauca, Born. 



Mactra glauca, v luteola, Jeff. 



Genus III.— Lutraria, Lam. 

 Lutraria elliptica, Lain. 



Lutraria elliptica, v alterutra, Jeff. 

 Lutraria oblonoa, Chem. 



Genus IV.— Scrobicularia, Sclm. 

 SCROBICULARIA PRISMATICA, Moilt. 



Scrobicularia nitida, Mull. 



Scrobicularia nitida, v ovata, Jeff. 

 Scrobicularia alba, Wood. 



Scrobicularia alba, v radiata, Lov. 



Scrobicularia alba, v curta, Jeff. 

 Scrobicularia tenuis, Mont. 

 Scrobicularia piperata, BeUonius. 



Family XVI.— SOLENID/E, Z^/r. 



Genus I.— Solecurtus, De Blain. 

 Solecurtus candidus, Ren. 



Solecurtus candidus, v oblonga, Jeff. 

 Solecurtus antiquatus, Pnlt. 



Genus II.— Ceratisolen, Forbes. 

 Ceratisolen legumen, L. 



Genus III.— Solen, L. 

 Solen pellucidus, Penn. 

 Solen ensis, L. 

 Solen siliqua, L. 



Solen siliqua, v arcuata, Jeff. 

 Solen vagina, Z. 



Family XVII.— PANDORID/C, Gray. 

 Genus \.—Pd<w(\ovdi^ Hawass. 

 Pandora in^quivalvis, Z. 



Pandora imequivalvis, v tenuis, y^^. 

 Pandora inajquivalvis, v obtusa, Jeff. 



