The Shell-Collector’s Handbook. 71 
PHYSA HYPNORUM, LINN. 
SHELL sinistral, fusiform, with an elongated spire ending 
obtusely, thin, very glossy, covered with an epidermis, 
yellowish or reddish horn-coloured ; whorls six to seven, 
rounded, body-whorl larger than the rest of the shell ; 
suture shallow; mouth oval-lanceolate; pillar slightly 
sinuate. Length of shell 3-3? inch. Animal blackish ; 
mantle simple, and not covering the shell. 
Habitat.—Ponds, ditches, and slow-running streams. 
v. major (Charp.): Shell larger, more coloured. 
Height 10-13 mm. (= v. 6. Charp., Moll. Suiss., p. 19, 
pl. i1., fig. 12.) 
v. angulata (T. D. A. Cockerell): Shell with a bluntly 
angled periphery. 
v. cuprella (Rowe): Shell spindle-shaped, highly 
polished, semitransparent, copper-coloured, faintly striate 
in line of growth; whorls six, convex, with last one far 
exceeding in size the rest put together; spire tapering, 
blunt at its extremity; suture not deep; mouth oval, 
contracted above; inner lip spread on columella, with a 
strong and thick fold on its lower side. Body very dark 
slate-coloured, with very minute spots of a lighter colour, 
truncate in front, tapering to a point behind; edges 
slightly lighter than body-colour; tentacles long, slender, 
tapering, widely divergent. 
m. decollatum (Nelson): Spire decollated. 
PHYSA FONTINALIS, LINN. 
SHELL sinistral, oval, not covered with an epidermis, semi- 
transparent, thin, glossy, pale, greyish horn-coloured ; 
whorls four to five, tumid, the first three extremely small, 
the last one occupying ?ths or $ths of the shell; suture deep ; 
spire extremely short; mouth oblong and wider and larger in 
proportion than in P. hypnorum; columella sinuate. 
Length of shell $-imch; width j-inch. Animal blackish- 
