OF NORTHUMBERLAND AND DURHAM. 39 



31. CLAUSILIA, Draparnaud. 



1. C, LAMINATA, MoTlt. 



Clausilia hidens, Gray, Turt. Man. 212, t. 5, f. 53. 

 In woods, frequent. Mr. Hanley informs us that this is not 

 the Turbo bidens of Linnaeus, for which the name must be re- 

 served. 



2. C. DUBiA, Brap. 



Clausilia dubia, Aid. in Newc. N. H. Trans, ii. 339 ; Gray, 

 Turt. Man. 216, t. 12, f 143. 

 On rocks at West Boldon and Castle Eden. Tunstall Hill and 

 Ryhope Dean. — Mr. R. Uoivse. 



3. C. RUGOSA, Drap. 



Clausilia rugosa, Drap. Hist. Moll. 73, t. 4, f. 19, 20. 

 Clausilia nigricans, Gray, Turt. Man. 217, t. 5, f 5S. 

 Var. More slender, and nearly smooth. 

 Clausilia parvula, Turt. Man. 1st Ed. 74, i. 58 (not C. par- 

 vula of continental authors). 

 On stones, trees, &c., in woods and rocky places, not uncom- 

 mon. The variety in Tanfield and Castle Eden Deans. 



32. BAL^A, Gray. 

 1. B. PERVERSA, Linn. 



Pujxc fragilis, Drap. Hist. Moll. 68, t. 4, f 4. 

 Baloea perversa. Gray, Turt. Man. 207, t. 6, f 70. 

 In moss and on old walls, not common. Castle Eden. — J. A. 

 Ryhope Dean. — Mr. R. Howse. 



33. PUPA, Draparnaud. 



1. P. MARGIN ATA, Bva]}. 



Pupa marginata. Gray, Turt. Man. 196, t. 7, f 79. 

 On the sea banks, frequent. 



2. P. UMBILICATA, Drap. 



Pupa timbilicata, Gray, Turt. Man. 193, t. 7, f 78. 

 Under stones in old quarries, woods, (fee, common. 



3. P. Anglica, Fer. 



Pttpa Anglica, Gray, Turt. Man. 195, t. 7, f 82. 



