458 LAMELLIBRANCHIATA. 



FAMILY AVICULID.E. Actinodesma, Avlcula, Aviculopinna, Bakevellia, Ecte- 



nodesma, Glyptodesraa, Inoceraiaus, Liopteria, Leptodesma, Limoptera, 



Monopteria, Monotis, Palseopinna, Posidonomya, Pseudomonotis, Pteroni- 



tella, Pteronites. 

 FAMILY AVICULOPECTENID^E. Aviculopecten, Crenipecten, Euchondria, Ly- 



riopecten, Pernopecten, Pterinopecten, Streblopteria. 

 FAMILY CARDIID^E. Cardiola, Cardiopsis, Cardium, Dexiobia, Glyptocardia, 



Lunulicardium, Palreocardia, Panenka, Paracardium, Pararca. 

 FAMILY CARDIOMORPHHXE. Cardiomorpha, Edmondia, Euthydesma, Pro- 



tomya. 



FAMILY CH^NOCARDIIDJE. Chsenocardia. 

 FAMILY CONOCARDIID^E. Conocardium. 

 FAMILY CYPRINID^E. Astartella, Cardinia, Clidophorus, Cypricardia, Cypri- 



cardites, Matheria, Pleurophorus, Vanuxemia. 

 FAMILY CYTHERODONTID.E. Cytherodon, Lyrodesma, Schizodus. 

 FAMILY EOPTERIID^E. Eopteria, Euchasma. 

 FAMILY GRAMMYSIID.E. Allorisma, Chsenomya, Cuneamya, Grammysia, Lep- 



todomus, Sedgwickia. 

 FAMILY LUCINID^E. Paracylas. 

 FAMILY MODIOMORPHIDJE. Amnigeuia, Cypricardella, Elymella, Goniophora, 



Glossites, Modiomorpha. 

 FAMILY MYACID.E. Anthracomya. 

 FAMILY MYTILID^E. Anthracoptera, Gosselettia, Lithophaga, Megambonia, 



Modiella, Modiolopsis, Myalina, Mytilarca, Mytilops, Plethomytilus, 



Pyanomya. 

 FAMILY NUCULID^E. Nucula, Nuculana, Nuculites, Palseoneilo, Pyrenomceus, 



Solenomya, Tellinomya, Yoldia. 

 FAMILY NYASSID^E. Nyassa. 

 FAMILY ORTHONOTID^E. Orthodesma, Orthonota, Orthonotella, Palaeosolen, 



Sphenolium. 



FAMILY OSTREID^E. Ostrea, Placunopsis. 

 FAMILY PAL^EANATINID^:. Ilionia, Palseanatina, Prorhynchus. 

 FAMILY PAL^EOCONCHID^E. Pataoconcha. 

 FAMILY PHOLADELLID^. Ciraitaria, Pholadella, Phthonia. 

 FAMILY PINNID^E. Pinna. 

 FAMILY PROTHYRID^E. Prothyris. 



FAMILY PTERINIID^E. Actinopteria, Pterinea, Ptychopteria, Vertumnia. 

 FAMILY ^ANGUINOLITID^. Cypricardinia, Promacrus, Spathella, Sphenotus, 



Sanguinolites. 



FAMILY SOLENID^E. Solenopsis. 

 FAMILY SPIRODOMID^E. Spirodomus. 

 FAMILY TECHNOPHORID^E. Technophorus. 

 FAMILY TELLINIDA:. Tellinopsis. 

 FAMILY TRIGONIID^;. Dolabra, ? Ischyrinia. ? 

 FAMILY UNIONIZE. Anthracosia, Prisconaia. 



