INDEX 



TO 



THE NAUTILUS, VOL. XVII. 



INDEX TO SUBJECTS, GENERA AND SPECIES. 



Abida 115 



Achatinellidae, description of new species . . . .34 



Aquillus Montf. 24 



Alsea .115 



Alycoeus awaensis Pils. & Hir., n. sp. . . . . .117 



Amastra fossilis Baldwin, n. sp. .... .35 



Amastra henshawi Baldwin, n. sp. . . . .34 



Amastra saxicola Baldwin, n. sp. . . . . .34 



Amastra senilis Baldwin, n. sp. ...... 35 



Amnicola augustina Pils., n. sp. ...... 113 



Amnicola galbana Hald. ....... 39 



Ancylastrum . . . . . . . ' . .14 



Ancyli adhering to water-beetles . . . . .120 



Ancyli, notes on Eastern American . . . . 13, 25 



Ancylus diaphanus Hald. (PI. II, figs. 13-18) . . 17, 31 

 Ancylus excentricus Morelet (PI. I, figs. 19-21) . . 27 



Ancylus fuscus Adams (PI. I, figs. 1-9) . . . 15,19 

 Ancylus fuscus Adams var. eugraptus Pils. (PI. I, figs. 



10-15) . 17,19 



Ancylus, Gundlachia and 97 



Ancylus haldemani 29 



Ancylus kirklandi Walker, n. sp. (PI. II, figs. 1-12) . 29, 31 

 Ancylus obscurus Hald. (PL I, figs. 16-18) . . .14, 25, 28 



(iii) 



