VI 



THE NAUTILUS. 



Kentucky, Mollusca of southern. 75 



Lampsilis simpsoni Ferris, n. sp. (Arkansas) . . .38 



Land shells from rejactamenta of the Rio Grande at Mesilla, 



N. Mex. and of Gallinas R. at Las Vegas, N. Mex. . . 9 

 Lassea rubra Montg. and L. bermudensis Bush, the same 



species .......... 106 



Las Vegas, N. Mex., Shells of 47 



Lima hamlini Dall, n. sp. (cretaceous, see page 36) . . 15 

 Limicolaria oviformis Ancey, A new Asiatic species . . 42 

 Limnaea mighelsi W. G. Binn. Note on the habits of . 8 



Limpet, Note on a new abyssal 48, 60 



Los Angeles, Cal., Age of deposit underlying . . .36 

 Mazatlania Dall, proposed for Euryta A. Adams 1858 not 



of Gistel 1848 44 



Mitrularia Schum, 1817 = Cheilea Modeer, 1703 . . .45 



Mollusks in grass ........ 93 



Murex petra Dall. A new Murex from California . 37 



Naiades, a review of Simpson's Synopsis .... 130 



Names which must be discarded (Dall.) . . . .44 



New Mexican snails, new records of . . . 82, 85 



Odostomia, variation in ...... 126 



Omphalina laevigata latior Pils., n. var. . . . .56 



Omphalina laevigata perlaevis Pils., n. var. . . . .56 



Pecten (Lyropecten) dilleri Dall, n. sp. (fossil) . . .117 



Phenacolepas, catalogue of species of the genus . . .61 



Philomycus secretus Cockerell, n. sp. . . . . .59 



Phyllaphysia, a genus new to the Pacific Coast . . .91 



Phyllaph3 r sia taylori Dall., n. sp. . . . . .92 



Physae of Northeastei-n Illinois, a revision of the . 16 



Ph} r sa ancillaria var. magnalacustris Walker, n. var. . . 97 



Physa ancillaria var. crassa Walker, n. var. . . .98 



Physa gyrina Say . . . . . . . .19 



Physa gyrina elliptica Lea ....... 23 



Physa heterostropha Say . . . . . . .17 



Physa integra Hald. ........ 23 



Physa moussoni Ancey, n. sp. . . . . . .84 



Physa sayii Tappan . . . . . . . .18 



Pinna from California, a new . ... 143 



Pisidia, some general notes on . . . . .5,6 



