844 
845 
1647 
846 
847 
848 
429 
204 
471 
203 
849 
2500 
2501 
184 
423 
1947 
543 
544 
542 
2677 
$14 
2276 
2350 
381 
850 
317 
2525 
851 
652 
1705 
1694 
1695 
1696 
1697 
384 
854 
3045 
1267 
2446 
1443 
1441 
1442 
2447 
1440 
2760 
2761 
1665 
2887 
855 
3042 
2448 
856 
857 
858 
859 
860 
1336 
2055 
230 
3046 
22 
Kennerlia filosa Carpenter. 
Kennerlia grandis Dall. 
Labiosa anatina Spengler. 1802. West Mexico. 
Labiosa undulata Gould. 136 
Lacuna giacialis Muller. 
Lacuna porrecta Carpenter. 
Lacuna solidula Loven. 
Lacuna unifasciata Cpr 
Lacuna unifasciata aurantiaca Carpenter. 
Lacuna variegata Cpr 
Lacuna vincta Montagu. 
Laila 
Laila Cockerelli 
Lamellaria diegoensis 
Lamellaria stearnsiana Dall. 
Lanx patelloidea Lea. 
Laqueus californicus Koch. 
Variety Vancouveriensis Davidson. 
Laqueus jeffreysi Dall. 
Laqueus Morsei 
Lasea rubra Mont 
Latirus ceratus Wood. 
Latirus lugubris C. B. Adams. 
Lazaria subquadrata Carpenter 
Leda acuta Conrad. 
Leda czelata Hds 
Leda amblia 
Leda cuneata? Sowerby. 
Leda fossa Baird. 
Leda taphria Dall. 
Leda cellulita Dall. 
Leda leonina Dall. 
Leda conceptionis Dall. 
Leda pontonia Dall. 
Leda hamata Carpenter 1446 853 
Leda minuta O. Fabricius. 
Lepeta czcoides Carp. 
Lepidopleurus cancellatus Sby. 
Lepidopleurus crebriscostatus Cpr. 
Lepidopleurus farallonis Dall. 
Lepidopleurus halistreptus Dall. 
Lepidopleurus luridus Dall. 
‘Lepidopleurus Mertensi Midd. 
Lepidopleurus mesogonus Dall. 
Lepidopleurus nexus Cpr. 2888 
Lepidopleurus Oldroydi Bartsch. 
Lepidopleurus percrassus 
Lepidopleurus rugatus Cpr. 
Leptochiton cancellatus Sowerby. 
Leptochiton internexus Carp. 
Leptochiton nexus Cpr. 
Leptochiton punctatus Whiteaves. 
Leptolimnea kirtlandiana Lea. 
Lepton dionzeum Carpenter. 
Lepton merceum Carpenter. 
Lepton rude Dall. 
Lepton umbonatum Cpr., 1857. Mazatlan. 
Leptogyra alaskana 
Leptothyra bacula Cpr 
Leptothyra carpenteriana Pilsbry. 
