THE NAUTILUS. V 



Margaritana sinuata Lam ... 



Marine shells from drift on Upper Matecumbe Key, Florida. 59 

 Martyn's Universal Conchologist, Another note on, . 95, 107 

 Miocene correlation, notes on .... . 101 



Mollusca from Wyoming Co. , N. Y. . . . .56 



Murex tritonis Linn6, the generic name to be used for . 55 

 Naiades, studies in . . . . . . . .88 



Notes . . . .12, 24, 35, 48, 70, 83, 95, 120, 143 



Nyctilochus Gistel ........ 55 



Oreohelices from Wyoming, Notes on some . . .50 

 Oreohelix cooperi W. G. B. . . . . 52 



Oreohelix cooperi minor Ckll .... .53 



Oreohelix hendersoni dakani Henderson n. subsp. 



Oreohelix haydeni betheli Pils. and Ckll. in Colorado . 39 



Oreohelix ioensis Pils ..... . 134 



Oreohelix peripherica Anc ...... 53 



Oreohelix pygmrea Pils. (PI. Ill, figs. 10, 12) . 37, 52 



Oreohelix yavapai extremitatis Pils. & Ferriss . . .50 

 Pacific conchological club . . . . . .16 



Parreysia from Kamurun Africa, two new species of . .85 

 Parreysia loboensis Frierson n. sp. (PI. V) . .85 



Parreysia nyangensis Frierson n. sp. (PI. V) . . 86 



Partula emersoni Pilsbry n. sp. (PI. IV, fig. 11) . .67 

 Partulina montagui Pilsbry n. sp. . . . . .40 



Pecten circularis Sowb . . . . . . .122 



Pecten (Euvola) cataractes Dall, n. n. . . . 121 



Pectens, notes on some West American .... 121 



Philomycus caroliniensis form nebulosa at New Orleans . 



Philomycus costaricensis (Morch) var. a . 



Philomycus from the Republic of Panama 



Physa heterostropha Say in Europe . . . . .112 



Planorbis antrosus Conr. ....... 106 



Planorbis vermicularis Gld. . . . . . .144 



Polygyra barbigera ....... 



Polygyra edvardsii Bid ....... 12 



Post-glacial Mollusca of Emmet Co., Mich. ... 7 



Post-glacial Mollusca, W T aukesha Co., Wisconsin . . 68 

 Publications received . . . . -24, 35, 47, 106 



Pyramidula solitaria occidentalis (Marts. ) 105 



Pyrazus milium Dall, in Florida . . . . .59 



Ricinula = Drupa ........ 79 



Sayella crosseana Dall in Florida . . . . .59 



Shell collecting on the west coast of Baja California . . 25 

 Shells from a pleistocene deposit near Sierra Nueva, Santo 

 Domingo ......... 120 



Shells from a single dredge haul off Key West, Fla. . .120 



