566 
PROCEEDINGS OF THE NATIONAL MUSEUM. 
INDEX TO GENERA. 
[Names in italics are newly proposed.] 
I 
Acrilla, 506. 
Actoon, 512. 
Actinotrophon, 534, 541. 
Acus, 503. 
Admete, 504. 
Agriopoma, 509. 
Amsea, 506. 
Amauropsis, 551. 
Anaplocamus, 550. 
Ancistrolepis, 523. 
Antiplanes, 513. 
Antisireptns, 532. 
Area, 508. 
Argonauta, 511. 
Ashmunella, 500. 
Astarte, 508. 
Asthenothjfirus, 510. 
Astyris, 531. 
Atractus, 520. 
Aurinia, 504. 
Austrotrophon, 534, 548. 
Beringius, 524, 529. 
Boreofusus, 524. 
Boreotrophon, 533, 537, 543. 
Buccinopsis, 530. 
Buccinum, 517. 
Calliostoma, 552. 
Cancellaria, 516. 
Ceres, 501. 
Cetoconcha, 561. 
Chalmon, 535. 
Chama, 509. 
Chiton, 555. 
Chrysodomus, 520, 522, 525, 
Cirsotrema, 506. 
Clidiophora, 511. 
Conue, 503. 
Crania, 562. 
Crenella, 507, 559. 
Ctenoides, 507. 
Cucullaria, 508. 
Cylichna, 502. 
Daphnella, 503. 
Drillia, 516. 
Ecphora, 522. 
Emarginula, 555. 
Fossularca, 508. 
Fusu8, 517. 
Ganesa, 554. 
Gibbula, 553. 
Haplostemma, 501. 
Heliotropis, 522. 
Hemithyris, 562. 
Holospira, 501. 
Hyalopatina, 502. 
Ischnochiton, 557. 
Jumala, 529. 
Kennerleyia, 511. 
Latirus, 505. 
Leda, 558. 
Lepidopleurus, 555. 
Lima, 507. 
Limopsis, 559. 
Liomesus, 524, 530. 
Lissogyra, 554. 
Litorina, 551. 
Mactra, 510. 
Mactrella, 510. 
Margarita, 554. 
Margarites, 554. 
Maugerella, 558. 
Mercenaria, 560. 
Meretrix, 509, 510. 
MkrogJijphis, 512. 
Mipus, 535. 
Mohnia, 523. 
Murex, 532. 
Muricidea, 504. 
Nanina, 499. 
Neptunea, 520, 536. 
Neptunella, 520. 
Pagodula, 534, 539. 
Pandora, 511. 
Panomya, 560. 
Panopea, 560. 
Pecten, 507, 559. 
Pedicnlaria, 550. 
Pliilobrya, 507. 
Pinon, 535. 
Pirgos, 535, 542. 
Plagioctenium, 507. 
Pleurotoma, 513, 515. 
Plmfnms, 523, 525. 
Pseudamusium, 559. 
Pseudoneptunea, 505. 
Pseudohyalina, 500. 
Pteronotus, 532, 
Pteropurpura, 532. 
Pterymurex, 532. 
Punctum, 500. 
Retusa, 502. 
Rhombus, 520. 
Roperia, 517. 
Scala, 505. 
Scaphella, 517. 
Sipho, 520. 
Siphonaria, 501. 
Piphonella, 520. 
Siphonorbis, 520, 522. 
Solariella, 553. 
Stenoradsia, 558. 
Strombella, 521. 
Subemarginula, 555. 
Subula, 503. 
Sulcosinus, 524. 
Terebra, 502. 
Terebratalia, 561. 
Toledonia, 512. 
Traehyradsia, 558. 
Transennella, 509. 
Tritonellium, 520. 
Tritonofusus, 520, 522, 525. 
Trophon, 533, 535, 548. 
Trophonopsis, 533, 538, 541, 
546. 
Troschelia, 524. 
Typhis, 550. 
Ukko, 529. 
Umbracuhim, 502. 
Venus, 560. 
Vitrea, 500. 
Voluta, 517. 
Volutopsis, 521, 523. 
Yolutopsius, 521, 523, 527. 
Zeidora, 555. 
Zonitoides, 500. 
