MOLLUSCA OF PORTO RICO. 
511 
Systematic catalogue of the mollusks of Porto Rico — Continued. 
Genus Lithophaga Bolten. 
Lithophaga an tillarum d’Orl >igny. 
Lithophaga bisulcata d’Orbigny. 
Genus Crenelea Blown. 
Crenelle, divwricata d’Orbigny. 
Genus Modiolaria Beck. 
Modiolaria lateralis Say. 
Order Teleodesmacea. 
Superfamily Myacea. 
Family Gastroohaeniiee. 
Genus Gastroch^ena Cuvier, 
Gastrochcm a cuneiforrnis Spengler. 
Family Saxicavida:. 
Genus Saxicavella Fischer. 
Saxicavella sagrinata Dali & Simpson. 
Family Corbulidae. 
Genus Corbula Lamarck. 
Corbula dispariUs d’Orbigny. 
Corbula dietziana C. B. Adams. 
Corbula swiftiema C. B. Adams. 
Corbula cequivalvis Philippi. 
Corbula caribcea d’Orbigny. 
Family Myacidae. 
Genus Sphenia Turton. 
Sphenia antillensis Dali & Simpson. 
Superfamily Maotracea. 
Family Mactrida:. 
Subfamily Mactrinas. 
Genus Mactra (Linnaeus) Lamarck. 
Mactra frag ills Gmelin . 
Mactra alata Spengler. 
Family Mesodesmatidae. 
Subfamily Erviliinai. 
Genus Ervieia Turton. 
Ervilia concentrica Gould. 
Superfamily Solenacea. 
Family Soeenidae. 
Genus Psammosolen Risso. 
Psammosolen sanctm-marthai d’Orbigny. 
Genus Soeen Linnaeus. 
Solen obliquvs Spengler. 
Superfamily TeleinAceA. 
Family Psammobiidae. 
Genus Heterodox ax Morch. 
ILeterodona.r bimaculutus Linnaeus. 
Genus Tagelus Gray. 
Tagelus gibbus Spengler. 
Genus Asaphis Modeer. 
Asaphis coccinea Martyn. 
Family Donacida;. 
Genus Don ax Linnaeus. 
Ponax denticulate Linnaeus. 
Genus Iphigenia Schumacher. 
Iphigenia brasiliensis Lamarck. 
Family Semelidae. 
Genus Semele Schumacher. 
Semele proficua Pulteney. 
Semele )> urp wrascen e Gmelin. 
Semele bellastriata Conrad. 
Semele nucidoides Conrad. 
Genus Abra (Leach) Lamarck. 
Abra (equal is Say. 
Abra lioica Dali. 
Abra longicallus Scacchi. 
Genus Cumingia Sowerby. 
Cuming ia tellinoides Conrad var. coarctata 
Sowerby. 
Family Teleinida;. 
Genus Tellina Linnaeus. 
Tellina radiata Linnaeus. 
Subgenus Arcopagia Leach. 
Tellina fausta Donovan . 
Tellina persica Dali & Simpson. 
Tellina lintea Conrad. 
Tellina, alternata Say. 
Tellina georgiana Dali. 
Tellina vespuciana d’Orbigny. 
Tellina lineata Turton. 
Tellina martinicensis d’Orbigny. 
Subgenus Angulus Megerle. 
Tellina sybaritica Dali. 
Tellina consobrvna d’Orbigny. 
Tellina vitrea d’Orbigny. 
