512 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Systematic catalogue of the molhdsks of Porto Pico — Continued. 
Genus Macoma Leach. 
Macoma constricta Bruguiere. 
Macoma tenta Say var. souleyetiana Re- 
el uz. 
Macoma pseudom&ra Dal 1 & Simpson. 
Subgenus Psammacoma Dali. 
Macoma tag el! form is Dali. 
Macoma hrevifrons Say. 
Genus Strigilla Turton. 
Strigilla carnaria Linnaeus. 
Strigilla romhergii Morch. 
Strigilla flexuosa Say. 
Strigilla pisiformis Linn tens. 
Superfamily Y eneraoea. 
Family Petricolida:. 
Genus Petricola Lamarck. 
Petricola lapicida Gmelin. 
Family Venerida:. 
Subfamily Venerina. 
Genus Venus Limneus. 
Verms rugatina Heilprin. 
Venus rugosa Gmelin. 
Venus brasiliana Gmelin. 
Venus cancellated Linnaeus. 
Venus granulated Gmelin. 
Venus latili rata Conrad. 
Venus pap Ida Li mucus. 
Venus pygmeea Lamarck. 
Subgenus Anomalocardia Schumacher. 
Venus flexuosa Li 1 1 mens. 
Genus Meretrix Lamarck. 
Meretrix albida Gmelin. 
Meretrix aresta Dali & Simpson. 
Meretrix hebrcea Lamarck. 
Meretrix maculata Linnaeus. 
Subgenus Dione Gray. 
Meretrix circinata Born. 
Meretrix dione Linnaeus. 
Subgenus Transennella Dali. 
Meretrix cubmnaned d’Orbigny. 
Meretrix culebrana Dali & Simpson. 
Genus Dosinia Scopoli. 
Dosinia elegams Conrad. 
Genus Mysia Leach. 
Mysied tenuis Recluz. 
Subfamily Circina. 
Genus Circe Schumacher. 
Subgenus Gouldia C. B. Adams. 
Gouldia cerina C. B. Adams. 
Gouldkd insular is Dali & Simpson. 
Super f am ily Ca rdi ace a . 
Family Ca rdi ida. 
Genus Cardium Linnaeus. 
Subgenus Trachycardium Morch. 
Cardium muricatum Lamarck. 
Cardium leucostoma Born. 
Cardium isocardia Linnaeus. 
Subgenus Fragum Bolten. 
Cardium antillarum d’Orbigny. 
Cardium medium Linnaeus. 
Subgenus Papyridea Swainson. 
Cardium spinosidin Meusehen. 
Cardium semisulcatidm Gray. 
Subgenus Lavicardium Swainson. 
Cardium serratum Linnaeus. 
Cardium ( serratum var. ?) sybariticum 
Dali. 
Cardium serratum var. lemigatum Lam. 
Cardium serratum var. multilineatum 
Dali & Simpson. 
Genus Protocardia Bey rich. 
/ \otocardia peramab ilis Dali. 
Protocardia tincta Dali. 
Family Thyasirida;. 
Genus Thyasira Leach. 
Thyasira trisinuated d’Orbigny. 
Thycdsira conia Dali & Simpson. 
Family Lucinida. 
Genus Codakia Scopoli. 
Codakia orbicula/ris Linnaeus. 
Subgenus Jagonja Recluz. 
Codakia orbiculata Montagu. 
Codakia portoricana Dali . 
Codakia costata d’Orbigny. 
Codakia pectinella C. B. Adams. 
