13 
3245 Alvania aurivillii. Alaska. 
2056 Alvania Bakeri 
3250 Alvania californica. Monterey, Cal. 
3251 Alvania carpenteri. Neah bay,-Wash. 
‘1247 Alvwania castanea Moller. 
13244 Alvania castanella. Alaska. 
1244 Alvania compacta Carpenter. 
3246 Alvania cosmia. San Pedro, Cal.—Baja Cal. 
3257 =A: electrina Cpr. Cape San Lucas. 
38256 <A: excurvata. Mazatlan. 
1245 Alwania filosa Cpr. 
3259 A: fossilis. San Pedro, Cal. (fossil). 
3260 A: iliuliukensis. Alaska. 
8248 Alvania lirata. Gulf of Cal. 
8255 A: montereyensis. Monterey, Cal.—Alaska. 
3264 <A: Oldroydz. San Pedro, Cal. 
3252 Alvania perdroana. San Pedro, Cal. 
°21:1374 Alvania purpurea Dall. 
1246 Alvania reticulata Cpr. 
3258 A: rosana. Santa Rosa Island, Cal. 
3249 Alvania trachisma. Monterey, Cal. 
3265 <A: tumida Cpr. Cape San Lucas. 
1878 Amalia Hewstoni 
2606 Genus Amalthea 
21:0775 Amalthea antiquata L. Is Hipponyx a. 
1249 Amalthea cranioides Carpenter. 
21:1501 Amalthea tumens Cpr. (now Hipponix). 
21:0777 Amaura Moeller. Sec. of Odostomia. 
1431 Amauropsis islandicus Gmel. 
1430 Amauropsis purpurea Dall. 
21:0699 Genus Amiantis Cpr., 1863. 
21:0700 Amiantis callosa~Conr. 118. 764. 
2607 Amicula pallasii Midd. 
2681 Ammonitella Yatesi precursor 
3057 Ammostrephes Ayresii Gabb. 
3058 Ammostrephes giganteus Gabb. 
627 Amnicola dalli Call. 
1966 Amnicola concinnatiensis 
47 Amnicola limosa Say 
628 Amnicola longinqua Gld. 
630 Amnicola micrococcus Pilsbry. 
631 <Amntcola protea Gould. 
632 Amnicola turbiniformis Tryon. 
21:0778 Amphidesma decisa Conr. Is Semele d. 
21:0779 Amphidesma pulchra Sby. Is Semele p. 
633 Amphisphyra subquadrdata Carpenter. 
21:0733 Genus Amphissa H. & A. Adams, 1853. 
629 Amphissa bicolor Dall. 
414 Amphissa corrugata Reeve. 
3069 Amphissa palmeri. Gulf of Cal. 
3070 Amphissa parvula. Off La Paz, Baja Cal. 
634 Amphissa undata Carpenter. 
173 Amphissa versicolor Dall 
431 Amphithalamus inclusus Carpenter. 
3100 Amphithalamus tenuis 
21:0780 Ampullina purpurea Dall. . Alaska. 
21:0781 Amusium caurinum Gld. Is Pecten ec. 
21:0782 Amycla carinata Hds. Is Columbella c. 
