VI 11 



THE NAUTILUS. 



Pleurodonte acuta var. julia 



Pleurodonte acuta var. lucerna Mull. . 



Pleurodonte acuta var. sublucerna Pils. 



Pleurodonte adamsiana Clapp, n. sp. . 



Pleurodonte bainbridgei Pfr. 



Pleurodonte carmelita Fer. 



Pleurodonte chemnitziana Pfr. 



Pleurodonte (Labyrinthus) Clappi Pils., n. sp. 



Pleurodonte gigantea .... 



Pleurodonte ingens var. imperforata Adams 



Pleurodonte ingens var. indigna Adams 



Pleurodonte ingens Adams 



Pleurodonte oxytenes Adams 



Pleurodonte patina Adams 



Pleurodonte patina var. nobilis Adams 



Pleurodonte pretiosa Adams 



Pleurodonte soror Fer. var. peracuta Yendryes, 



Pleurodonte spengleriana Pfr. 



Pleurodonte subacuta Pfr. .... 



Pleurodonte vacillans Yendryes, n. sp. 



Pleurotomaria, note on the name 



Pleurotomarius = Pleurotoma . 



Pol}'gyra devia var. hemphilli Y\\ G. B. 



Polygyra th}roides sanctisimonis Pils., n. var. 



Polygyra townsendiana var. pt}chophora A. D. Brown 



Polymesoda, the generic name for the American Cyrenas 



Potamides (Cerethidea) californica, how it travels 



Pristophora = Serridens 



P3 r ramidula alternate, the sub-species of 



Pyramidula alternata var. knoxensis Pils., n. var 



Pyramidula elrodi Pils. 



Publications received 



Quadrula andrewsii Marsh, n. sp. 



Quadrula lananensis Frierson, n. sp. . 



Rhode Island, the shell-bearing mollusca of 



Septidae, a new term for Tritonidse 



Serridens oblongus Cpr. 



Simpson, George B 



Sphaerium partumeium Say. 



. 140 



. 140 



. 140 



33,37 



138, 141 



137, 138 



137, 138 



34, 37 



14, 36 



. 138 



. 138 



137, 138 



137, 140 



137, 138 



. 138 



138, 141 



. 102 



138, 141 



137, 138 



. 101 



. 127 



. 127 



. 129 



129 



48 



82 



144 



6 



6 



130 



9, 24,36, 84, 107 



115 



75 



92, 104, 113, 130 



108 



144 



107 



103 



