INDEX 



TO 



THE NAUTILUS, VOL XX. 



INDEX TO SUBJECTS, GENERA AND SPECIES. 



Abalones and the earthquake . 



Abalones and the penal code of California 



Alabama, some shells of Mississippi and . 



Amphigyra Pilsbry, n. gen. 



Amphigyra alabamensis Pilsbry, n. sp. (PI. Ill 



Anodonta imbecillis Say .... 



Anostoma, on the generic name. 



Ashmunella rhyssa Ckll. (PL VIII, figs. 3-5) 



Ashmunella rhyssa edentata 



Ashmunella rhyssa hypo rhyssa. 



Ashmunella rhyssa townsendi Bartsch (PI 



1, 2) . 



Ashmunella, notes on some New Mexican. 



Athleta rarispina 



Basommatophora, two new American genera of 

 Bifidaria agna Pilsbry & Vanatta (figs. 1, 2, 3) 



Boreocheton 



Brachypodella, a synonym of . 



British Columbia shells 



Brooklyn Conchological Club .... 



(iii) 



figs 



VIII 



. 135 



. 85 

 34, 40, 52 

 . 49 

 1,2). 50 

 . 69 

 . 11 

 . 134 

 . 135 

 . 135 



figs. 

 . 133 

 . 133 



131, 142 

 . 49 

 . 141 

 . 64 

 . 47 

 . 95 

 . 89 



