THE NAUTILUS. V 



Kincaidella Hann 4 



Keimerlyia forresterensis, n. sp 134 



Laevapex Walker 3 



Lampsilis minor and L. villosa, distinctive characters of. 15 



Lampsilis ventricosa cohongoronta in the Potomac River. 40 



Lanx klamathensis Hann. (pi. 2, f. 2) 2 



Lanx patelloides Lea (pi. 2, f. 1) 2 



Lymnaea emarginata mighelsii from Alaska 12 



Lymnasidas of Oneida Lake, N. Y 92 



Macroceramus festus Gundl 43 



Micromya lienosa nigerrima Lea 118 



Mollusca of Clark County, Arkansas 109 



MoUusca of Oneida Lake, N. Y., further notes on the ... 81 



Mopalia imporcata lionotus, n. subsp 126 



Mopalia lowei, n. sp 125 



Mopalia muscosa laevior, n. subsp 126 



Murex pele Pilsbry (pi. 9, f. 9, 12) 99 



Naiades, new genera and species of Central American ... 47 



Nayades, the anatomy of two African 75 



Nephronaias 47 



Nesopupa farquhari Pilsbry, n. sp 50 



Nesopupa griqualandica M. & P 51 



Nodularia douglasiae, a Unio 128 



North Carolina land shells 71 



Note on the relation of snail fauna to floods 64 



Notes 35, 71, 107, 144 



Nova Scotia, collecting at Digby 57 



Oldroyd collection 71 



Oreohelix handi Pilsbry & Ferriss, n. sp 31, 94 



Peristemia thaanumi Pilsbry & Bryan, n. sp. (pi. 9, f. 



6, 7) 101 



Physidje of Oneida Lake, N. Y 89 



Planorbidas of Oneida Lake, N. Y 90 



Planorbis sampsoni Ancey 114 



Pleeotrema cubense from the mainland of Florida 55 



Polymita versicolor Born 43 



Polygyra albolabris maritima in Massachusetts 108 



Polygyra obstricta carolinensis Lea 116 



Polygyra, an arboreal 36 



Polygyra columbiana from Unalaska 13 



Polygyra texasiana tillandsiae Cockerell, u. var 36 



Ponsonby collection 36 



Psoronaias kuxensis Frierson, n. sp. (pi. 7, f. 1, 2) 48 



Publications received 34, 69, 108, 140 



Reichenbach 's Zoologie 79 



