VI THE NAUTILUS. 



Rliotlacrueu faliawbeiisis Walker, ii. sp. (pi. 1, f. 4-6) .... 7 



Ithodacniea elatior Aiitli 8 



Khodacniea filosa Coiii-ad ( pi. Ii, f. 2) 6 



Kliodaciiica ^uatkiiiiaiia Walk., ii. sp. (pi. 1, f. 'S, 7, 9) . . 9 



lllKHJaciiu'a liiiikleyi Walk 8 



Kliodaciuca rhodaciue Walk., n. bp. (pi. 1, i". 1, 2, 8; pi. 



3, f. 3) 8 



Rhodacinea Walker, n. gren 5 



Kliodacnieinae, n. subfam 5 



Kliodocephala Walker, n. sect 8 



Sampson, Francis Asbury (obituary) 137 



iSliells collected at Aiialieiin Bay and vicinity 103 



Sigfaretus, a new Californian 13 



Sinnni californicuni Oldroyd, n. sp 13 



ISonorella rooseveltiana Berry, n. sp 14 



Spatha kamenmensis Walker 77 



Spatha walbergi Krauss 77 



Sphaeriida?, notes on reproduction and growth in certain. 16 



Sphaeriida? of Oneida Lake, N. Y 84 



Strobilops labyrinthica texasiana Pils. & Ferr 114 



Succinea retusa Lea 93 



Thysanophora caeca Guppy (pi, 8, f. 3) 75 



Thysanophora dioscoricola C. B. Ads. (pi. 8, f. 2) 75 



Thysanophora macneilli Clapp, n. sp. (pi, 8, f. 1) 74 



Trachydernion lowei, n. sp 127 



Unio calfer Krauss 75 



Unio tetralasmus Say (pi. 7, f. 4) 49 



Unionidae of Oneida Lake, N. Y 83 



Unios, on the rate of growth of pond 49 



Vallonia cyelophorella septuagentaria Pils. & Ferr., n, 



var 95 



Valvata triearinata perconfusa Walker, n. n 36 



Valvatidae of Oneida Lake, N. Y 89 



Vitrea radiatula circumstriata Taylor 115 



Vivarium, a home-made 105 



Viviparidae of Oneida Lake, N. Y 86 



Viviparus malleatus and contectoides in Mass 107 



Walkerola Hannibal 2 



Winkley, Rev. Henrj^ W. (obituary) 136 



Zachrj'-sia emarginata Pfr. (pi. 7, f. 7) 79 



Zachrysia ramsdeni Pils., n. sp. (pi. 7, f. 5, 6) 78 



