INDEX 



TO 



THE NAUTILUS, XXXI. 



INDEX TO TITLES, GENERA AND SPECIES. 



Acella haldemani (Desk.) Binn 92 



Amastra, new species of 142 



Amnicola bakeriana Pilsbry, n. sp 44, 87 



Amnicola bakeriana nimia Pilsbry, n. var 45, 87 



Amnicola clarkei Pilsbry, n. sp 45, 88 



Amnicola oneida Pilsbry, n. sp 46, 88 



Amnicolidffi from Oneida Lake, N. Y 44, 87 



Amphidromus of Philippines 142 



Ampullaria, a sinistral 35 



Ampullaria globosa var. sinistrorsa 36 



AncylidaB of Oneida Lake, N. Y 90 



Ancylidae, revision of the classification of North American 1 



Ancylus elatior Anth 8 



Ancyhis filosus Conr 5, 6 



Ancylus fragilis Tryon 4 



Ancylus fuscus C. B. Ads 3 



Ancylus hinkleyi Walker 8 



Ancylus rivularis Say (pi. 2, fig. 3) 3 



Ancylus walkeri Pils. & Ferr 114 



Anodonta virens 121 



Arkansia wheeleri Walk. & Ortm 112, 121 



Arkansas, mollusca of Clark Co 109 



Astarte compacta Carp 10 



Astarte willetti Dall, n. sp 11 



Baldridge, Mrs. Maria 34 



Boreal land and freshwater shells, notes on 12 



Bullinus of Australia 140 



Campeloma lewisii Walker 116 



Carychium exiguum floridanum, n. subsp. (pi. 8, f. 4, 6) . 73 



iii 



