Index to the Nautilus 



New American land shells. Vol. 16, No. 3, p. 30, 1902. 

 Enteroxenos ostergreni, a new endo-parasitic gastropod. Vol. 16, 



No. 3, p. 36, 1902. 

 New land mollusks of the Japanese Empire. Vol. 16, No. 4, p. 



45, 1902. 



New land mollusks of the Japanese Empire. Vol. 16, No. 5, p. 

 33, 1902. 



A new Florida Helicina. Vol. 16, No. 5, p. 53, 1902. 

 Vertigo color ado ensis and V. ingersolli. Vol. 16, No. 5, p. 58, 

 1902. 



Ashmunella levettei Bid. Vol. 16, No. 5, p. 59, 1902. 

 Pyramidula elrodi and Epiphragmophora circumcarinata. Vol. 



16, No. 6, p. 62, 1902. 



Cantharidus peronii Philippi. Vol. 16, No. 6, p. 72, 1902. 

 Helicina japonica and related forms. Vol. 16, No. 11, p. 130, 

 1903. 



A new Pleurotomaria. Vol. 17, No. 3, p. 36, 1903. 

 Land shells of Curacao. Vol. 17, No. 4, p. 48, 1903. 

 The use of the generic name Helicostyla. Vol. 17, No. 5, p. 59, 

 1903. 



A new Jamaican Colobostylus. Vol. 17, No. 6, p. 65, 1903. 

 New Japanese marine mollusks. Vol. 17, No. 6, p. 69, 1903. 

 The greatest American Planorbis. Vol. 17, No. 7, p. 75, 1903. 

 A new Guppya from Florida. Vol. 17, No. 7, p. 77, 1903. 

 Schismope rimuloides Carpenter, at San Diego, California. Vol. 



17, No. 7, p. 84, 1903. 



Shells from Douglas County, Central Washington. Vol. 17, No. 

 7, p. 84, 1903. 



A new Floridian Amnicola. Vol. 17, No. 10, p. 113, 1904. 

 Note on shells from Arizona. Vol. 17, No. 11, p. 131, 1904. 

 Vertigo andrusiana Pilsbry. Vol. 17, No. 11, p. 131, 1904. 

 A new subspecies of Polygyra tridentata. Vol. 17, No. 12, p. 142, 

 1904. 



Notices of six new species of Unto from the Laramie Group. Vol. 



18, No. 1, p. 12, 1904. 



Note on the Venus arakana Nevill. Vol. 18, No. 2, p. 23, 1904. 

 Plectopylis in the Riukiu Islands. Vol. 18, No. 5, p. 58, 1904. 

 A new Lower Calif ornian Sonorella. Vol. 18, No. 5, p. 59, 1904. 



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