INDEX 



TO 



THE NAUTILUS, VOL. XVII. 



INDEX TO SUBJECTS, GENERA AND SPECIES. 



Abida. ...... 



Achatinellidse, description of new species 

 Aquillus Montf. .... 



Aleea ...... 



Alycoeus awaensis Pils. & Hir., n. sp, 

 Amastra fossilis Baldwin, n. sp. . 

 Amastra lienshawi Baldwin, n. sp. 

 Amastra saxicola Baldwin, n. sp. 

 Amastra senilis Baldwin, n. sp. . 

 Amnicola augustina Pils., n. sp. . 

 Amnicola galbana Hald. 

 Ancj'lastrum ..... 



Ancyli adhering to water-beetles 



Ancyli, notes on Eastern American 



Ancjdus diaphanus Hald. (PI. II, figs. 13-18) 



Ancj'lus excentricus Morelet (PI. I, figs. 19-21) 



Ancylus fuscus Adams (PI. I, figs. 1-9) 



Ancj'lus fuscus Adams var. eugraptus Pils. (PI. I 



10-15) 



Ancylus, Gundlachia and . 

 Ancylus haldemani 

 Ancylus kirklandi Walker, n. sp. (PL II, figs. 1-12) 

 Ancylus obscurus Hald. (PL I, figs. 16-18) . 



(iii) 



115 

 34 

 24 



115 



in 



35 

 34 

 34 

 35 

 113 

 39 

 14 

 120 

 13,25 

 17,31 

 . 27 

 15,19 

 figs. 

 17,19 

 . 97 

 . 29 

 29,31 

 14,25,28 



