VI THE NAUTILUS. 



Medionidus siropsonianus AValker, n. sp. .... 136 



Melania hahajimana P. & H., n. sp. . . . 8 



Melania libertina var. gigas P. & H., n. v. . . . .9 



Molluscan stampede (illustrated) . . . .31 



Museum Boltenianum ........ 84 



Myrtle Beach, a new locality in S. Carolina for recent and 



fossil mollusks ........ 60 



Natica prietoi Hidalgo, at Algiers . . . . .21 



New collector in the field [a chipmunk] . . . .23 



Notes and news . . . 12,22,36,59,67,84,91.131 



Nudibranchs, California!! ....... 131 



Omphalina pilsbryi Clapp, n. sp. . . . . .30 



Oreohelix clappi Ferriss, n. sp 53 



Oreohelix strigosa metcalfei Cockerell, n. subsp. . .113 



Ostrea arrosis Aldrich, n. sp. (PI. Ill) Eocene of Alabama. 61 

 Oyster, a distorted . ..... 24 



Panacea Dall, n. gen 143 



Panopea bitruncata Conrad (Plate IV) . . . .73 

 Parmulophora Dall, n.n. for Parmulina Dall, preoc. . . 113 

 Parreysia barnumi Pils.,n. n. for Unio browni Whitf. preoc. 12 

 Patinigera Pall, n.n. for Patinella Dall., 1870 (not Gray, 



1848) .... .113 



Pennsylvania!! snails and the State Zoologist . . . 131 



Petriola Dall, n.n 143 



Phacoides (Miltha) xantusi Dall, n. sp. . . . .111 



Pholeoteras euthrix ........ 67 



Physa gyrina ......... 31 



Pisidium atlanticuni Sterki, n. sp. ..... 128 



Pisidium limatulum Sterki, n. sp. .... 108 



Plectopylis in the Riukiu Islands 58 



Plectopylis (Sinicola) hirasei Pils., n. sp 58 



Pleurotoma (Antiplanes) catalinse Raymond, n. sp. . . 2 

 Pleurotoma (Genota) stearnsiana Raymond, n. sp. . 1, 15 



Pleurotoma from the pliocene of California, a new . .14 

 Polygyra appressa tryoniana Pils., n. subsp. . . 89 



Polygyra wheatleyi clingmanica Pils., n. subsp. ... .90 

 Polygyra monodon and P. hirsuta, Albino . . . .92 

 Polygyra (Stenotrema) barbata Clapp, n. sp. . . . 85 

 Polygyra stenotrema seminucla Clapp, n. var. . 86 



