206 SPARTZBRANCHIA. 
Shell with the spire slightly elevated. Whorls four, flattened 
and transversely striated ; aperture somewhat reflexed ; umbili- 
cus wide. Diameter three-sixteenths of an inch. 
Colour horny, sometimes tinged with greenish or greenish- 
testaceous. 
Animal black ; tentacles, lateral appendage and lobes of the 
foot pale bluish-black, terminating with hyaline; eyes very 
black. 
This species is common in ponds and ditches round London 
and Bristol. I have observed it in some of the ponds near 
Edinburgh. It appears to be a generally diffused species. 
2. VALVATA FONTINALIS. 
V. testa spira elevata ; anfractibus quinque, teretibus, transver-— 
sim striatis ; sutura angusta, profunda; umbilico angusto. 
Turbo fontinalis, Mont. Test. Brit. 348. t. xxii. f.4; M. & 
R. Trans. Linn. Soc. vii. 160; Turt. Conch. Dict. 207. 
Cyclostoma obtusum, Drap. Hist. des Moll. 33. t. i. f. 14. 
Lymneea fontinalis, Flem. Edinb. Encycl. vii. 78? 
Habitat in aquis lenté fluentibus et in fontibus. Diam. + unc. 
Shell with the spire elevated ; whorls five, rounded, trans- 
versely striated ; suture narrow and deep; umbilicus narrow. 
Diameter one-fourth of an inch. 
Colour pellucid-horny, often tinted with greenish. 
Animal pale cinereous ; sides of the tentacles, upper part and 
sides of the head and neck, upper aspect of the anterior lobes 
of the foot freckled with brownish, and sometimes with whitish ; 
middle or centre of the tentacles often whitish or purely hya- 
line ; eyes very black. 
Inhabits slowly flowing waters and fountains. Is by no 
means uncommon round London, Bristol and Exeter. It is 
found also in Duddingstone Loch near Edinburgh. 
Genus 95. PALUDINA. 
Paludina, Lamarck, Cuvier, Say. 
Vivipara, De Montfort. 
Testa elevata. Sutura profunda. Apertura rotundata. 
