VASSAR BROTHERS INSTITUTE. 49 
Two specimens Fulgur carica and its operculum, St. Augustine, Fla. 
One specimen Fulgur carica var. elisaeus, St. Augustine, Fla. 
Two specimens Pinna semi-nuda, St. Augustine, Fla. 
Three specimens Pinna muricata, St. Augustine, Fla. 
Five specimens Cardium magnum, St. Augustine, Fla. 
Several specimens Lucina edentula, St. Augustine, Fla. 
One specimen Venus mortoni, St. Augustine, Fla, 
Four specimens Venus mercenaria, St. Augustine, Fla. 
Six specimens Arca pexata, St. Augustine, Fla. 
Several specimens Arca incongrua, St. Augustine, Fla. 
Four specimens Arca ponderosa, St. Augustine, Fla. 
Several specimens Arca americana, St. Augustine, Fla. 
Several specimens Labiosa (reeta) canaliculata, St. Augustine, Fla. 
Two separate valves, Labiosa lineata, St. Augustine, Fla. 
Two specimens Ostraea virginica, St. Augustine, Fla. 
Several specimens Dosinia discus, St. Augustine, Fla. 
One specimen Pholas costata, St. Augustine, Fla. 
One specimen Pholas tunicata, St. Augustine, Fla. 
Five specimens Modiola plicatula, St. Augustine, Fla. 
Two specimens Solecurtus gibba, St. Augustine, Fla. 
Two specimens Lucina pennsylvanica, St. Augustine, Fla. 
Two specimens Mactra semelis, St. Augustine, Fla. 
Two specimens Iphigenia, sp. (?), Mosquito Inlet, Fla. 
Several specimens Tellina alternata, St. Augustine, Fla. 
One specimen Tellina interrupta, West Indies. 
Three specimens Tellina radiata, West Indies. 
Three specimens Tellina, sp. (?), West Indies. 
Six specimens Crepidula fornicata, St. Augustine, Fla. 
Several specimens Crepidula convexa, St. Augustine, Fla. 
Four specimens Crepidula unguiformis, St. Augustine, Fla. 
Five specimens Crepidula glaucus, St. Augustine, Fla. 
Two specimens Crepidula aculeata, St. Augustine, Fla. 
Fifteen specimens Fissurella alternata, St. Augustine, Fla. 
Three specimens Fissurella nodosa, St. Augustine. Fla. 
Three specimens Fissurella sp. (?), St. Augustine, Fla. 
Twenty-six specimens Siphonaria alternata, St. Augustine, Fla. 
Many specimens Donax variabilis, St. Augustine, Fla. 
Four specimens Sigaretus perspectivum, St. Augustine, Fla. 
Four specimens Natica mammalaris, St. Augustine, Fla. 
Nine specimens Nerita peleronta, West Indies. 
Ten specimens Nerita tesselata, West Indies. 
Nine specimens Nerita sp. (?), West Indies. 
Two specimens Nerita sp. (?), West Indies. 
Nine specimens Neritina reclivata, St. Augustine, Fla. 
Several specimens Littorina irrorata, St. Augustine, Fla. 
