287 
THE PIONEER LIST OF LINCOLNSHIRE 
LAND AND FRESHWATER SHELLS. 
THOMAS BALL. 
LAND-SHELLS OF LINCOLNSHIRE. 
Drar S1r,—I have never seen any account of the Lincoln- 
shire land-shells, neither is this county ever mentioned as a 
locality in conchological works. So, as your readers may like 
to know what is to be found in this little-explored neighbour- 
hood, I send a list of shells which I have taken in the northern 
part of the county during the last three years :— 
Helix virgata 
Cyclas cornea Planorbis margina- 
— rivicola tus — arbustorum 
— caliculata — vortex ~~ nia agra 
Pisidium — two or — spirorbis —  rufes 
three species —  nitidus — ericetorum 
Unio tumidus Succinea putris — cantiana 
— pictorum — gracilis — nemoralis 
Anodonta cygnea * Conovulus myoso- * —- do. var. _hor- 
Dreissena polymor- __ tis tensis 
ha Carychium  mini- rsa 
p aspe 
Bithinia Leachii u Bulimus obscurus 
Vitrina pellucida Pupa umbilicata 
— tentaculata 
Paludina listeri Zonites cellarius ——  muscorum 
Valvata piscinalis — nitidus (one ~-— edentula 
—« cristata ell —- pygmea (one 
Limnza peregra —  crystallinus shell) 
— _ stagnalis — nitidulus * Balea fragilis 
—  palustri —  alliarius Clausilia laminata 
— _ auricularius —  radiatulus — nigricans 
truncatulus urus Zua lubrica 
Physa hypnorum Helix aculeata * Achatina —_ 
—  fontinalis ygm one shell 
Planorbis corneus — pulchella * Cyclostoma__ ele- 
— albus — do. var. costata gans (two dea 
— nautileus —  rotundata Is). 
— contortus — caperata 
— carinatus --- fulva 
All but the five marked (*) were taken within a radius of a 
Oct. 1894. 
