THE NAUTILUS. 



25 



IX 



. 91 

 . 86 

 . 71 

 . 52 

 . 54 

 . 106 

 . 142 

 5 

 . 91 

 . 10 

 . 10 

 . 10 

 . 5 

 36, 38, 86 

 68, 76 

 figs. 



Ilyanaasa obsoleta in San Francisco Bay 

 Lampsilis fimbriata Frierson, n. sp. 

 Littorina nebulosa Lam. var. columellaris Orb. . 

 Lymneea jacksonensis Baker, n. sp. 

 Lymneea pseudopinguis Baker, n. sp. . 

 Maine, Shells of the Lake region of 

 Mollusks of North Haven 

 Pulmonates of the Manticus Is. 

 Marginella apicina Menke, Sinistral 

 Mathilda elongatoides Aldrich, n. sp. (PI. I, fig. 6) 

 Mathilda leona Aldrich, n. sp. (PI. I, figs. 4, 5) . 

 Mathilda singularis Aldrich, n. sp. (PI. I, fig. 11) 

 Matinicus Islands, Maine pulmonates of the 

 Mexican shells, Description of New . 

 Mexico, Shell-collecting in Northeastern 

 Micrarionta desertorum Pils. and Ferr., n. sp. (PI. 



6-10 



Milax gagates in Colorado ..... 

 Murex carpenteri var. alba Berry, n. var. . 

 Neoplanorbis carinatus Walker, n. sp. (PI. IX, figs 17, 18) 

 Neoplanorbis smithii Walker, n. sp. (PI. IX, figs. 1, 2) 



Neoplanorbis tantillus Pils. 126, 129 



Neoplanorbis umbilicatus Walker, n. sp. (PI. IX, figs. 3,4). 126 

 New York, A collecting trip at Nortbport .... 



North Carolina, A new Polygyra from . 



Oysters are wild animals ....... 



Pachycheilus vallesensis Hinkley, n. sp. (PI. Y, figs. 1-10) 

 Paludestrina tampicoensis Pilsbry & Hinkley n. sp. (PI 



V, fig- 13) 



Paphia ataminea Conr. ....... 



Pelseneer's treatise on Mollusca ...... 



Pennsylvania, Notes on the conchology of Pocono Manor 

 Perirhoe Dall, nov. section of Terebra . . . 124, 125 



Planorbis magnificus Pils. ....... 90 



Planorbis multivolvis Case (PI. YIII) 62 



Polygyra aulacomphala Pils. & Hinkley n. sp. (PI. Y, 



fig. 12) . . 38 



Polygyra hopetonensis Shuttlw. ...... 7 



Polygyra martensiana Pils. n. sp. (PI. XI, figs. 1-3) . 26, 133 



134 

 131 

 105 

 127 

 126 



98 

 13 



47 

 25 



39 

 141 



80 

 67 



