Dacrydium, M oiler. 



1469 vitreum, Moll. 



1470 a, hyalinum, Monts. 

 Crenella, Brown. 



1471 rhombea, Berkeley. 



1472 decussata, Montg. 



1473 glandula, Totten. 



1474 faba, Fabr. 



1475 arenaria, H. Martin. 



1476 pellucida, Jeff. = Limopsis pellucida, 



Jeff. 

 Idas, Jeffreys. 



1477 argenteus, Jeff. 

 Lithodomus, Cuvier. 



1478 lithophagus, Lin. 



1479 caudiger, Lamk. 

 Limopsis, Sassy. 



1480 aurita, Brocc. = obliqua, Adams. 



1481 minuta, Phil. = borealis, Woodw. 



1482 tenella, Jeff. 

 Pectunculus, Lamarck. 



1483 glycimeris, Lin. 



1484 a. bimaculatus, Poli. 



1485 pilosus, Lin. 



1486 violacescens, Lamk. 

 Area, Linne. 



1487 pectunculoides, Scacc. 



1488 glacialis, Gray. 



1489 obliqua, Phil. Koreni, Daniels. 



1490 Frielei, Jeff. 



1491 lactea, Lin. 



1492 a. Gaimardi, Payr. 



1493 nodulosa, Mull. = scabra, Poli. 



1494 pulchella, Reeve. = imbricata, Poli. 



1495 tetragona, Poli. 



1496 noae, Lin. 



1497 Polii, Mayer. = antiquata, Poli. 



1498 barbata, Lin. 



1499 pexata, Say. 



1500 transversa, Say. 

 Nucula, Lamarck. 



1501 nucleus, Lin. 



1502 radiata, Hanley. 



1503 sulcata, Brown. 



1504 tumidula, Malm. 



1505 segeensis, Forbes. 



1506 nitida, Sow. 



1507 proxima, Say. 



Nucula, Lamarck. continued. 



1508 tenuis, Montg. 



1509 a. expansa, Torell. 



1510 delphinodonta, Migh. 

 Leda, Schumacher. 



1511 minuta, Mull. 



1512 a. brevirostris, Jeff. 



1513 b. inflata. 



1514 pernula, Mull. 



1515 a. buccata, Moll. 



1516 pella, Lin. 



1517 fragilis, Chemn. = commutata, Phil. 

 Malletia, Desmoulins. 



1518 obtusa, M. Sars. 

 Yoldia, Morch. 



1519 thraciasformis, Storer. 

 i $20 limatula, Say. 



1521 myalis, Couth. 



1522 sapotilla, Gould. = hyperborea, Love'n. 

 Portlandia, Morch. 



1523 arctica, Gray. 



1524 lenticula, Fabr. = abyssicola, Torell. 



1525 lucida, Love'n. 



1526 intermedia, M. Sars. 



1527 tenuis, Phil. = pygmaea, F. & H. 



1528 frigida, Torell. 



1529 messanensis, Sequ. = acuminata, Jeff. 

 Cardita, Bruguiere. 



1530 antiquata, Lin. 



1531 aculeata, Poli. 



1532 calyculata, Lin. 

 !533 trapezia, Lin. 

 1534 corbis, Phil. 

 !$35 borealis, Conrad. 



Astarte, J. Sowerby. 



1536 sulcata, Da Cos. 



1537 a. scotica, Mat. & Rac. 



1538 b. fusca, Poli. 



1539 c. paucistriata, Jeff. 



1540 d. multicostata, Jeff. 



1541 e. minor, Jeff. 

 I $42 elliptica, Brown. 



1543 undata, Gould. 



1544 crebricostata, Forbes. 



1545 castanea, Say. 



1546 Warhami, Hancock. 



1547 fabula, Reeve. 



1548 acutecostata, Friele. 



