1397 
2031 
1396 
1398 
2762 
2763 
$75 
3071 
876 
328 
1428 
1609 
1611 
2296 
1429 
2764 
24 
Liomesus canaliculatus Dall. 
Liomesus nassula 
Liomesus Nux Dall. 
Liomesus ooides Middendorf. 
Liostraca varians Sby. 
Liotia acuticostata Cpr. 
Liotia fenestrata Carpenter. 
Liotia lurida 
Lithophagus attenuatus Deshayes. 
Lithophagus plumula Hanley 
Litorina aleutica Dall, Cal ac pr 4:271, t 1 f 3, 3a. 
Litorina (Tectarius) Galapagiensis 
Litorina (Tectarius) atyphus 
Litorina conspersa Phil. 
Litorina atkana Dall. 
Littorina grandis Midd. 
77 Litorina planaxis 
2748 
877 
Littorina pullata Cpr. 1864. 
Littorina rudis Donovan. 
76 Litorina scutulata 
878 
879 
552 
Littorina sitkana Philippi. 
Loligo stearnsii Hemphill. 
Lophocardium annettz Dall. 
92 Lottia gigantea 
89 Lucapina crenulata 
2749 
2444 
2445 
880 
881 
311 
2449 
2704 
882 
2097 
310 
883 
182 
1251 
291 
105 
2275 
1716 
3076 
2750 
2751 
3077 
1549 
1575 
1208 
365 
884 
885 
886 
887 
888 
368 
111 
1177 
298 
Lucapinella callomarginata Cpr. 
Lucina annulata Rve. 
Lucina approximata Dall. 
Lucina bella Conrad. 
Lucina borealis Linne. 
Lucina californica Conr 
Lunatia Draconis 
Lucina edentuloides Verrill. 
Lucina filosa Stimpson. 
Lucina zquizonata 
Lucina nuttallii Conr 
Lucina tenuisculpta Carpenter. 
Lunatia lewisii Gld 
Lunatia pallida Broderip and Sowerby. 
Lutricola alta Conr 
Lyonsia Californica 
Lyria barnesii Gray. 
Lysine Humboldtiana 
Lyonsia (Allogramma) Amabilis 
Lyonsia inflata Conr. 
Lyonsia nitida Conr. 
Lyonsia pugetensis 
Lyonsia (Entodesma) saxicola Baird. 
Lysinee fidelis Gray. 
Lysince townsendiana Lea. 
Machaera patula Dixon 
Macoma calcarea Chemnitz. 
Macoma carlottensis Whiteaves. 
Macoma edentula Broderip. 
Macoma edulis Nuttall. 
Macoma expansa Carpenter. 
Macoma inconspicua Broderip. 
Macoma indentata 
Macoma inflatula Dall. 
Macoma secta Conr. 
