TO RN 3 
^wertice obtusiusculo. Apertura sinistrorsa, elongata, 
| ex tribus teste partibus. duas xquans, | inferius ro- 
tundaía, superne angustata & acuminata. Fissura 
- umbilicalis nulla. 
Habitat in amnibus & fossis, in plantis aquati- 
cis praesertim in Lemna, vulgaris.' 
2. Physa Hypnorum. 
, * * E 
Ph. festa sinirtrorra. ovato-oblonga, diaphana, 
nitida, furco-'ulva ; spira exrerta, acuta, rub-nigra, 
Long. 10; Lat. 43 millim. 
Physa lhypuorum, Draparu. Hist. des Mol. p. 55. t. 3. 
| foi2, 13. —  Pfeiff. Land- uw: Wasserschn. p. 97. 
DE E. £719. 4 t4. f 29. —  Laun. Hist. anim. 
8$. vert. VL. 2. .p. 157. 
Bulla hypuorüm, Linn. Faun. Sv. p. 5223. — Syst. 
, nat. p., 1185. 
. Planorbis turritus, Müll. Verm. hist. p. 169. n. 354. 
Animal nigrum tentaculis pallide griseis ; pal-- 
lio testà condito. | 
Testa ovato-eblonga, tenuissima & fragilissima, 
diaphana, fuscescenti-fulva, s. rufescens. Spira exser- 
ta, conica, acuminata, afractibus sex, infimo ceteris 
majori. Apertura sinistrorsa, spirà vix longior, elon- 
gata, inferius retundata, superne angustata & acu- 
.minata,  Fissura umbilicalis nulla. 
Habitat im fossis & rivis, in plantis aquaticis, 
passim. : 
À M- 
