194 Dr. Maton’s and Mr. Racketr’s 
Testa diametro-, poll., alba, levis, anfractibus4 torosis. Umbilicus patulus. 
Farietas B. anfract. striis, interdum etiam annulis numerosis mietbrina 
ceis cincti. 
First noticed by Morton, who found it in bogs in 
Northamptonshire. Found also by Mr. Agnew, at Dul- 
strode, Middlesex ; by Mr. Boys, near Sandwich, Kent; 
after a flood, on the banks of the Avon, Wilts, and 
in the sand of the Kennet, near Newbury, Berks, by 
Mr. Montagu; on dry banks, at Spetisbury, Dorset, by 
the Rev. T. Rackett. 
Mr. Montagu has remarked, that the variety is seen 
with every gradation from slight strie to membrana- 
ceous rings; and we have found the plain and the an- - 
nulated shells in precisely the same Mibudtious. 
Al. 
Ericetorum. H. testa umbilicata, depressa, fascia una: vel pluribus, 
umbilico ampliato. Linn. Gmel. p. 3632. 
Lister Anim. Angl. t. 2. f. 13. Conch. t. 18. f. 78. 
Pennant Brit. Zool. t. 85. f. 192. H. albella. 
Da Costa Brit. Conch. p. 53. t. 4. f. 8. H. Enea. l 
Muller Verm. 2. p. 33. n: 986. = =x 
Chemn. Conch. 9. t. 132. f. 1193. a. b. 
Pulteney in Hutch. Dorset. p. 47. t. 20. f. 8. 
Montagu Test. Brit. p. 431. - Supplem. t. 24. f. 2. 
Donovan Brit. Shells, t. 151. f. 2. 
Habitat in ericetis aridis, arenosis, seu cretaceis, frequentissima. 
Tute poll. lata, + alta, tenuis, subpellucida, levis, alba, subalbida, vel 
. lutescens, fascia unica flavescente brunnea in partem superiorem an- 
fractus. primi, et per suturam ad apicem excurrente; interdum fasciis 
plurimis pallescentibus, interdum tota albida. Spira depressa, fere 
plana. Umbilicus ampliatus. Anfractus minores conspicui. 
First figured and described by Lister. 
-« 
-12 cingenda, 
