16 VALVATIDE, 
4. Valvata stoliczkana. 
Valvata stoliczkana, G. Nevill, Moll. Miss, Ydrkand, 1878, figs. 34—386, 
Ydrkand. 
30 Ydrkand (type); coll. Dr. F. Stoliczka, 
Exceedingly close to V. macrastoma, Stein, possibly only a 
variety ; distinguished by being a little more depressed, with 
more open umbilicus, &c. 
5. Valvata alpestris. 
Valvata alpestris, Blauner, Us., Kister, Conch.—Cab. II, 1852, pl. 14, Jigs. 
7—8, Grindelwald. 
1 Aix-les-Bains ; coll. G. Nevill, Esq. 
Perhaps better classed as a var. of V. piscinalis! In any 
case, a well marked form ! 
12 Tirol; coll. P. Bouvier, Esq. and P. Joly, Esq. 
6. Valvata eximia. 
Valvata eximia, Servain, Moll. Espagne, 1880, Badajoz: alt.4, diam. 5 mil. 
20 Burgos; coll. G. Nevill, Esq. 
7. Valvata virens. 
Valvata virens, Tryon, Proc. Acad, Philad. 1867, pl. I, fig. 7, California. 
18 Clear Lake, California; ex c. Prof. W, Newcomb. 
& Valvata tricarinata. 
Cyclostoma tricarinatum, Lesueur, Ms., Say, Journ. Acad. Philad. I, 1817, 
Rv. Delaware; sect. Tropidina, 
80 New-York; ex c. Revd. E, R. Beadle and Prof. W. Newcomb. 
var. unicarinata. 
Valvata unicarinatum, De Kay, New-York Moll. 1840. 
12 New-York; coll. Prof. W. Newcomb. 
9. Valvata sincera. 
Valvata sincera, Say, Keating’s, Narr. Long’s Exp. Il, App. 1824, North- 
West Territory ; fide Newc, = V. humerosa, Tryon, 
6 California; ex c. Prof. W., Newcomb. 
