226 
5. 
Dr. Maton’s and — 
D’Argenv. Conch: t. 27. f. 3.? 
. Hill's Swammerd. p. 83. t. 10. We 97 
Pennant Brit. Zool. t. 87. f. 142. 
Da Costa Brit. Conch. p. 48. t. 3. p 17, 18. 
Schrot. _Flussconch. t. 5. F 53519, 3 
: Favanne Conch. £. 61. f. D. 3, 4, 17, 20. 
Chemn. Conch. 9. t. 124. Je: 1088. 
Pulteney in Hutch. Dorset. p. 50. t. 16. $ Inm. 18. 
= Donovan Brit. Shells, t. 46.4516 e | 
Montagu Test. Brit. p. 0. —— 
Habitat in rivis et fluviis. 
Testa 3. poll. longa, 2 lata, subovalis, levis, utplurimum alba, colore nigro, 
cinereo, rubro, virescente, reticulatim depicta, maculata vel fasciata. 
Spira obtusa. Apertura magnitudine fere teste. Labrum interne 
planum, operculo aurantiaco, semiovato. = 
First described and paired by Lister. Common in 
gentle 1 rivers. 
pallidula. N. testa umbilicata, de umbilico profundo MS uc- 
6. 
tiores i ue 
Da Costa Brit. "EC 2. 51. = à. Pas p 
. Donovan Brit. Shells, t. 16. f. 1. 
Montagu Test. Brit. p. 468. 
Pulteney in Hutch. Borat: t. 20. ^ 4, 5. 
Habitat ad littora, rarior. . 
Testa magnitudine pisi, convexa, Ph sub epidermide brunnea. Spira 
prominula, Apertura semilunaris, patula. 
First described and figured by Da Costa. Found 
es sj r ringly i in Kent, and on the Western coast. It has 
: = | received a also from. Shetland. - 
littoralis. N. testa devi, vaitive. carioso, tabiii edentulis. - Linn. 
Suecica, n. Aio. adh Aat, an. i. 124. p. 1253. 
Lian Catch | ODE, X 
Lister 
