yi THE NAUTILUS. 



Prosopeas argeutea Henderson, u.. sp. (PI. II, fio-. io> IG 



Pteronotus Carpenteri Dall, n.ep .. iss 



Publications received in. $;{. 47. fin, 72. Si , <i:l. ins 



Pupa Hoppii Moller 10-1 



Pupa (Neartula) su perioris Pi Is n. sp ion 



Pupa (Pupilla) sonorana Sterki, u. sp ]-_>s 



Pupa (Pupilla) sonorana var. teuella Sterki. u. var ii'9 



Pupida?, new 127 



Pyramidtila Cockerelli, Pils.. n. sp 85 



Pyramidula striatella catskilleusis Pils., u. var 8(5 



Pyramidu la strigosa (young) 24 



Quarternary fossil shells, Long Bea jh. Cal 7 



Ravenia Hollandi Henderson, u. sp (figured) 2f> 



Roper, Edward W., In Memoriam 12!) 



San Diego, California, as a collecting ground 88 



Septi fer hi f'u rcatus Conrad, note ou <; 



Septifer bifu rcatus Rve. and Mytilu? bifurcatus Conrad, an in- 

 terrogation i n regard to r,7 



Shallcross. John (Obituary) . <r> 



Shell collecting at Mt. Desert. Maine 7;! 



Shells of ReJding, Shasta County, Cal ;><i 



Sitala carinifera Stol. var. maraugensis u. var., Aldricli (PI I, 



n'g . G) 2 



Spha-rium HI ycasheuse Baker, u- sp Gfi 



Sp ixia Pils , and Van u. stibg r>7 



Succinea retusa magister Pils., u. var 10H 



Terebra texa ua Dall, n. sp 45 



Trochomorpha Dohertvi Aldricli, n. sp (PI. 1. figs 7. S) - J 



ITnio cornplanatus Sol. at New Philadelphia, Ohio 24 



I 'nio collecting S 



Unio cylindricus Say, var. strigillatus Wright, n. var (i 



Vnio Iheringi Wright, n. sj) <i;! 



Tnio Strodeanus Wright, n. sp r> 



Unio villosus Wright, n. sp s 



Unionidae, Emigration of 1^9 



Unionidie. some observations ou the genital organs with refer- 

 ence to classification 18. -2s 



Urosalpinx cinereus in San Francisco Bay 'l]-2 



Vallonia on the Pacific Coast GO. 71 



Vitrea carolinensis. Cockerel! 120 



Vitiea iudentata var. umbilicata Siugley 120 



Vitrea, notes on the iudentata group of 120 



Vitrea Rhoadsi Pils., n. sp 101 



Vitrea sculptil is Bid 120 



Zonitoides Randolph! Pils. and Clapp, n sp S7 



