16 YALVATlDiE, 



4. V^alvata stoliezkana. 



Valvata stoliezkana, G. Nevill, Moll. Miss. Ydrkand, lS78,figs. 34 — 86, 

 YdrJcand. 



30 Yarkand (type) ; eoll. Dr. F. Stoliezka. 



Exceedingly close to F. macrostoma, Stein, possibly only a 

 variety ; distinguished by being a little more depressed, with 

 more open umbilicus, &c. 



5. Valvata alpestris. 



Valvata alpestris, Blauner, Ms., Kiister, Conch. — Cab, II, 1852, pi. 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. PMlad. 1867, pi. I, fig. 7, California. 

 18 Clear Lake, California; ex c. Prof. W.Newcomb. 



8. Valvata tricarinata. 



Cyclostoma tricarinatum, Lesueur, Ms., Say, Journ. Acad. Philad. I, 1817, 

 Rv. Delaware; sect. Tropidina. 



30 New-York; ex c. Revd. E. R. Beadle and Prof. W. Newcouib. 



var. unicarinata. 



Valvata unicarinatum, De Kay, New-Yorlc Moll, 1840, 

 12 New-York ; coll. Prof. W. Newcomb. 



9. Valvata sincera. 



Valvata sincera. Say, Keating's, Narr. Long's Exp. II, App. 1824, North- 

 West Territory ; fide Newc. = V. humerosa, Tryon, 



6 California ; ex c. Prof. W, Newcomb. 



