120 



Schroet. Flussconch. 1779. p. 247. nr. 61. — Trochus cri- 

 staius, Schroet. 1. c. p. 280. tab. VI. fig. \\. — Helix pi- 

 scinalis, Gmel. Syst. nal. 1. 1790. p. 3627. nr. 4i. — Helix 

 fascicularis, Gmel. 1. c. p. 3641. nr. 185. — Turbo fonti- 

 nalis, Donov. Brit. Shells. (1801) pl. 102. — Turbo cri- 

 sfata, Poiret Coq. fluv. et terr. 1801. p. 29. nr. 1. — Twbo 

 fontinalis, Montag. Test. Brit. 1803. p. 348. nr. 65 (exci. 

 plurib. synon.). — Cyclostoma obtusum^ Drap. Hist. Moll. 

 1805. p. 33. nr. 3. pl. 1. fig. 14. — Valvata piscinalis, 

 Daudeb. Ess. meth. conch. 1807. p. 75. nr. 2. — Valvata 

 obtuswiij Daudeb. 1. c. p. 128. nr. 1. — Turbo fontinalis, 

 Montag. Supplem. Test. Brit. 1808. p. 182. tab. 22. fig. 4. 

 — Helix fascicularis, Alten Conch. Augsb. 1812. p. 74. 

 tab. VIII. fig. 16. — Cyclostoma obtusum, Voilh in Sturms 

 D. Fauna VI. Hft. 4. 1819. tab. 2. — Valvata obtusa, PfeifF. 

 d. L. u. S. W. Moll. 1. 1821. p. 98. nr. 1. tab. 1. fig. 13 

 et tab. 4. fig. 32. — Valvata piscinalis, a, Hartm. in N. 

 Alpin. 1. 1821. p. 257. nr. 133. — Valvata piscinalis, Lam. 

 Hist. nat. 6. 2. 1822. p. 172. nr. 1. — Valvata piscinalis, 

 Nilss. Hist. Moll. Suec. 1822. p. 85. nr. 1 (excl. var.). — 

 Vallonia Rosalia, Risso Hist. nat. Eur. merid. 4. 1826. p. 102. 

 nr.237. pl. 3. fig. 30. — Valvata obtusa, PfeifF. 1. c. 3. 1828. 

 p. 66 (excl. syn. Brardi). — Valvata piscinalis, Mke. Syn. 

 meth. Moll. ed. 2. 1830. p. 46 (excl. iuv.). — Valvata obtusa, 

 Turt. Man. of L. & Fr. W. Shells. 1831. p. 130. nr. et fig. 114 

 (excl. syn. Brard). — Valvata piscinalis, Sow. Gen. of 

 Shells, nr. 41 (1831?). Valv. fig. 1. — Valvata piscinalis, 

 Desh. Lam. Hist. nat. 8. 1838. p. 504. nr. 1. 



Variat haec species: 

 a. spira convexa, vel breviuscula, trigyra, obtusa, sutura 



mediocri. Lat. 3, alt. 1, 9 lin. 

 h. spira brevi, vel submediocri, tetragyra, submucronata, 



sutura profunda. Lat. 3, alt. 2, 2 lin. 



Hab. in rivis, rivulis, fossis, lacubus, piscinis, limoso 

 alveo, muscis aquaticis, e. gr. Fontinali antipyreiicae, al- 

 gis e. gr. Soleniae intestinali, lapidibus adhaerens, in 

 Dania, Anglia, Gallia, Germania; in Hassia (C. Pfeiffer), 

 Westpkalia (A. Weihe), Pyrmontio (ipse). 



