350 



REPORT OF NATIONAL MUSEUM, 1892. 



Conchifera. — The following table of the families of the Conchifera is 

 constructed in the same form as that of the Gasteropoda, and tbe gen- 

 eral remarks preceding that table are applicable to this: 



ORDER DIMYARIA. 



Marine. 



Brackish. 



Aspergillida' 



Gastrochsenidae 



Teredinidse Teredinidse 



Pholadidse 



Soloiiidie 



Solecurtida- Solecurtidas. 



Saxicavidae 



Myidae 



Fresh. 



Teredinidse. 



Solecurtidse. 



Corbttlidae 



Paiidoridae 



Anatinidse 



Myochamidse .. 

 Pholadomyidse. 

 Mactrida- 



Corbulidffi Corbnlid; 



Mesodesniida- . . . 

 Ampliidesnnda>. 



Tellinidaj 



Psammobiidae . . . 



Donacida? 



Petricolidse 



Veneridae 



Glauconomidae. . 

 Cyrenidae 



Psammobiidae. 



Cyrenoididae . 

 Dreissenidae . 



Veniliidie 



Glossidae 



Cardiidas 



Chamidse 



Lueinidae 



Ungulinidae. . 



Eryriuidse 



Cyaiuiidre 



Leptonida' — 

 Galeoinmidae. 

 Soleruyida? — 

 Crassatellidre 

 Carditida? 



Glauconomidae - 



Cyrenida' Cyrenidas. 



Pisidiidae. 



Cyrenoidida> Cyrenoididae. 



Dreissenidae Dreissenidae. 



Adacnida> 



Trigonidia 1 

 Nuculidae .. 



Ledidae 



Areidae 



Arcidae 



Adacnidse. 



Unionida 1 . 



Iridinida'. 



Mycetopodida-. 



iEtheriidae. 



Muelleviidae. 



Areidae . 



