VALVATID.B. 95 



Family VALVATID.E. 



Subfamily VALVATIN.^. 



81k'1I nnibilicate turbinate oi- subdiscoidal depressed; labruiu 

 continuous ; operculum inultispiral. 



Distribution. Europe, N. Asia, N. America. 



Genus VALVATA. 



Valvata, Miiller, Verm. Hist, ii, 1774, p. 198; Zool. Dun. Prodr. 



1776, p. 2:39. 

 Buccinum, d'Argenville. 



Nerifct, (ieoHvoy ; Miiller; Schriiter; Ginelin; Alton. 

 i/e//.r, Schrciter ; Gmeliu ; Montagu; Alien. 

 Trochus, Schriiter. 



Ci/c/ostotna, Drapornaud ; Voitli ; Lesuenr. 

 Turbo, Donovon ; Poiret ; Montagu ; Turton olini. 

 Valvearius, Dum6ril. 



Paliidina, Menke olim : Michaud ; Deshaj-es. 

 Giporhis ^- Valvata, Pitziuger. 

 Voloata, Berge. 



Type, Valvata cristata, Miill. ; Europe. 



Manr/e. Europe ; N. Asia. 



Sbell umbilicate, lurbinate or subdiscoidal, with little exserted 

 spire, uhorls few, not numerous ; aperture circular, oblique ; 

 labrum continuous, thin ; operculum multispiral. 



186. Valvata pisciualis {Midler). 



Nerita piscinalis t^- pusilla, Miiller, Verm. Hist. pt. 2 (1774), 



pp. 171-172. 

 Trochus cristatus, Schroter, Gesch. Fluss-Conch. (1779), p. 280, 



pl.G,fig,l]. 



Helix piscijialis Sj- fascicularis, Gmeliu, Syst. Xat. (1788) pp. 3G27, 



3641. 

 Nerita ohtusa, Studer, Coxe, Trav. in Switz. iii (1789) p. 436. 

 Turbo fontinalis, Pulteaey, Cat. Shells Dorset. (1799), p. 45. 

 Turbo cristatus, Poiret, Coq. de I'Aisne (1801) p. 29 (not of Maton 



& Rackett). 

 Ctfclostoma obtusum, Drnparnaud, Tahl. Moll. (1801) p. 39. 

 Valvata minuta, Drapainaud, Hist. Moll. (1805) p. 42, pi. 1, 



ligs. ;il5-38. 

 Valvata m-'icitialis, Ft5i'ussac, Ess. Syst. Conch. (1807) p. 75. 

 Lymnce a fontinalis, Fleming, Edin. Encyc. vii (1814) p. 78. 

 Valvata ohtusa, Brard, Coq. Paris (Itilo) p. 190, pi. G, tig. 17. 

 Turbo thermaUs, Dilhvyn, Desc. Cat. Shells (1817) p. 852. 

 Valvata depress, C. Pl'eifter, Deuts. Moll, i (1821) p. 100, pi. 4, 



fig. 33. 

 Valvata moquiniana, liegnies, Dupuy, Hist. Moll, v (1851) p. 58(), 



pi. 28, tig. 15. 



The following description of this species, w Inch is widely sjiread 



