THE NAUTILUS. V 



Mactrella (Harvella) elegans Sowb. . . . . .62 



Mactrella, notes on American species of . .61 



Margaritana margaritana . . 5 



Margaritana monodonta ... ... 5 



Marginella californica Tomlin . .... 138 



Marginella varia Sowerby . . 138 



Michigan, mollusca from Berrien county . . 47 



Micrarionta veatchii ....... 97 



Microceramus perconicus anafensis Henderson . . .137 

 Mollusca of Anaheim Bay, California . . . .129 



Montana Mollusca . . . . . . . 124, 144 



Museum Boltenianum, an index to the . . . .27 



Nantucket and Martha's Vineyard, notes on collecting . 109 

 Najades, studies in . . . . . . . .63 



New England, fauna of . . . . . .120 



New Mexican Expedition of 1914 13, 29, 41 



Ohio, mollusca of Geneva . . . . . .121 



Oklahoma, the Gastropoda of Payne county . 88 



Oliva bulbosa var. immaculata Vanatta n. n. . .68 



Oliva ispidula var. algida Vanatta n. var. . . .71 



Oliva ispidula var. gratiosa Vanatta n. var. . . .71 



Oliva peruviana var. subcastanea Vanatta n. var. . 68 



Oliva peruviana var. vadi Vanatta n. var . . .132 

 Oliva, notes on ....... 67, 132 



Olivella biplicata var. lapillus Vanatta n. var. . . .71 



Olivella blanesi var. albata Vanatta n. var. . .71 



Ontario, mollusca of Georgian Bay . . . 132 



Oreohelix barbata Pils .... .30 



Oreohelix cooperi berryi Pils., n. subsp. . 48 



Oreohelix cooperi W. G. B. . . . . . . 142 



Oreohelix haydeni utahensis Hemphill .... 139 



Oreohelix strigosa magnicornu Pilsbry . . 141 



Oysters of Oyster Run, Durham, N. H. . . .28 



Paludestrina salsa in New Jersey . . 85 



Philomycus ohioensis Sterki MS . 122 



Pleistocene mollusks from Illinois . . . 87 



Pleurobema cor Simp. . . ... 116 



Pleurobema lewisii Lea . . ... 114 



Polygyra albolabrif 1 ., edible ...... 143 



Publications received 24, 59, 106, 120, 132 



Quadrula heros Say . .... 4 



Reversed or sinistral shells ... . . 128 



Shells of Put-in-Bay Island, Lake Erie . . . .18 



Sierra de Cubitas, Camaguey, Cuba . . 17 



Sinistral shells .... ... 128 



Solenopsidae Solenomorphidte . . 84 



