THE NAUTILUS. IX 



Rissoa kelseyi Dall and Bartsch, n. sp. . . . .94 



Rissoina bakeri Bartsch, n. sp. ...... 9 



Semele werburtoni T. Wood == Codakia orbicularis L. . 49 

 Shell-bearing mollusca of Rhode Island . . . .16 



Shells of Caihoun Falls, South Carolina . . . .125 



Shells collected on Cliff Island, Casco Bay, Maine . . 119 

 Shells collected on San Martins Island, L. California, Mex. 40 

 Shell collecting on the Mississippi ..... 102 



Shells collected in the Sacramento Mts., New Mexico . . 57 

 Shells from North Carolina, notes on some. . . . 106 



Sitala latissima Pils., n. sp. ....... 56 



Slugs as medicine ........ 84 



Sonorella granulatissima Pils., n. sp. . . . . .32 



Sphaerium deformis H. F. Carpenter . . . . .84 



Sphyradium edentula Drap. in Eastern Asia . . .75 

 Tasmanian and West Indian Conchology, notes on .49 



Tertiary mollusca from Alabama, Mississippi and Florida, 



new 97 



Tornatellina biplicata Pils., n. sp. . . . . .57 



Trishoplita lischkeana var. hizenensis Pils. & Hir., n. var. . 135 

 Trishoplita mesogonia var. shikokuensis Pils. & Hir., n. var. 135 

 Tritonia palmeri Cooper, note on . . . . .117 



Trivia atomaria Dall, n. sp. . . . . . . .43 



Trivia panamensis Dall, n. sp. ...... 43 



Unio from Tennessee, description of a new (Plate I) . .7 

 Unionidie in Texas and Louisiana, collecting . . .37 

 Unio popeii Lea, in New Mexico . . . . .69 



Veronicella sloanei Cur., as medicine . . . . .84 



Verticordia dalliana Aldr., n. sp. (PI. IV, f. 8) . . . 100 

 Verticordia quadrangularis Aldr., n. sp. (PI. IY, f. 22, 23) . 101 

 Verticoidia sotoensis Aldr., n. sp. (PL IV, f. 19-21) . . 100 

 Vertigo coloradensis and V. ingersolli . . . .58 



Vitrea draparnaldi Beck in Washington, D. C. . . .94 



Wetherby, Albert Gr. (portrait) 10 



Zonitoides arboreus in Japan . . . . . .119 



Zonitoides subarboreus Pils., n. sp. . . . .54 



