VI THE NAUTILUS. 



Pleistocene, a remarkably rich pocket of fossil drift from 



the 80 



Pleurobema fassinans Lea 31 



Pleurobema friersoiii Wright 30 



Pleurobema missouriensis Marsh (PL V, figs. 1, 2) 140 



Pleurodonte sagemoii goodrichi Ramsden n. subsp 49 



Polygyra colmttensis Clapp n. sp 78 



Polygyra inflecta mobiliensis Clapp 11. var 128 



Postpliocene shells of Providence and Lupus, Mo 15 



Prolasmidonta Ortmann n. subgen 44 



Proptera capax Green 67 



Publications Received 12, 35, 59, 72, 84, 96, 108 



Puncturella caryophylla Dall n. sp 63 



Puncturella cognata Gould 6? 



Puncturella cooperi Carp 63 



Puncturella cucullata Gould 63, 87 



Puncturella falklandica A. Ads 63 



Puncturella galeata Gould 64 



Puncturella longifissa Dall n. sp 63 



Puncturella major Dall 64 



Puncturella multistriata Dall n. sp 63 



Pupilla muscorum xerobia Pils. n. subsp. (PL II, f. 1, 2) 38 



Quadrula pustulata Lea 21 



Ranella lampas of authors, notes on 80 



Rhytidopoma tollini Ramsden n. sp 135 



Rimula mazatlanica Carp 62 



Rumina decollata in Texas 11 



Shells from Sussex Co., N. J 11 



Simpsonaias Frierson n. gen 7, 40 



Simpsoniconcha Frierson n. gen 40 



Squid, Monterey Bay and Oregon 22, 23 



Subemarginula yatesii Dall 62 



Symphynota (Alasminota) holstonia 43 



Symphynota, observations on the genus 40 



Tertiary fossils on Long Island 85 



Thysanophora hornii (Gabb) 110 



Tornatellides pilsbryi Cooke n. sp 79 



Unionidae, remarks on classification of the 6 



Unione fauna of Cache River, Arkansas 73 



Unio crassa Ritz 33 



Unio pictorum Linn 32 



Urocoptidae, new Cuban species of 4, 5 



Urocoptis mayensis Torre & Ramsden n. sp 51 



Urocoptis pilsbryana Ramsden n. sp. (PL I, f. 3, 4) .... 4 



Urocoptis scobinata Ramsden n. sp 133 



