Sy MOLLUSCA OF SOMERSET. 
out the Bristol district. Gwyn Jeffreys, in British Conchology, 
1, 90, remarks that it is a Somerset species. Cundall wrote, 
* “common, (?) Kenn Moor.” Norman’s record reads :—* In 
the moor ditches, in company with Planorbis marginatus, but 
not common.” 
Weston district ; F. A. Knight. 
Bath; Kenneth McKean. 
Ichester, a few ; J. Ponsonby. 
Wellington ; W. Gyngell. 
PLANORBIS UMBILICATUS, Muller (= Planorbis complanatus, 
Jeffreys, and Planorbis marginatus, Draparnaud). 
A frequent species in ponds and slow-running streams. 
North. 
Streams near Clevedon; Misses Hele. 
* Abundant in the rhines of all the moors, and common in 
ponds and ditches”; Norman. 
Very common in rhines about Berrow, Highbridge, Shap- 
wick, ete. ! 
Ditches at Harwood, near Wincanton; W. Herridge. 
Weston district ; F. A. Knight. 
Kenn Moor; Cundall. 
Shell-bearing deposit at Dumball Island ; H/. Bolton. 
South. 
Middle Chinnock and Ilchester ; J. Ponsonby. 
Wellington ; W. Gyngell. 
Var. rhombea, Turton. 
Middle Chinnock ; J. Ponsonby. 
PLANORBIS VORTEX, Linné. 
Frequent in ponds and slow running streams. 
North. 
Yatton ; Bristol Mus. Coll. 
Jenyns coll,; Bath Museum. 
“Very common on the whole of the western side of the 
county in rhines and ponds ;” Norman. 
Harwood, near Wincanton ! 
Very abundant in rhines about Berrow, Shapwick and 
Meare ! 
Kenn Moor; Cundall. 
Weston district; F. A. Knight. 
