CLASSIFICATION. 
EU CURED Beth Rane. oc os ae ote Sa Latema: 
KELL pan... ys eee. y anellin: 
MonrTAcuTIDa .....2........s....- Montacuta. 
TURTONPADAS® 75... 50 1-4. «oak ss oe ULCOmiA 
OX CEADID A. iy = nets ha) ean oe Cyclas. 
Pisidium. 
**** Mantle open, tubes short. 
CARDIADA: s.6.. 2s ste eannense aes Cardia. 
MACTRID A: c....0 pees oe a een. oe Nnetrals 
CYERINDDA tla Ss... okie 2 Spa: 
Circe. 
Astarte. 
Isocardia. 
MENA Ose os. st = See eee ees VENUS: 
Pullastra. 
DGONWACIDE  Ghehs 3. tc bees ese 2s Donax:, 
Ervilia. 
**kKE Mantle open, tubes long. 
TEELINTDAE oni binjocrs doc atte ee ss LeLING, 
Syndosmya. 
Scrobicularia. 
Lucinopsis. 
*KKKKE Mantle closed, tubes short. 
ANATINED Abin vl Selo LATE ot Anatina. 
CoRBULIDZ ...... Seta acd oo a @orbular 
Spheenia. 
Pandora. 
SOLENIDA. ..A7 GM s206.25 5. be oe .... Solen. 
KEEEKEE Mantle closed, tubes long. 
SOLENIDAice one eet wa ciet eo ¢s NOLMICUFLUS. 
GASTROCHANID A gincaunciorssik Oe... Gastrocheena. 
Saxicava. 
Venerirupis. 
MYAD .... 0. /aRRRES I. siemc en yal. 
Panopeea. 
PHODADEDM. : S2518. 6c See Aienleyeusee Pholas. 
Teredo. 
Xylophaga. 
