258 HUDSON : Hogg's list of mollusca of stockton. 



9. Lymnea palustris Drap. ) ^^^^^ ^_^^j^ 



Helix palustns^ Lin. Gmel. > j^ , 



Helix fragilis?c[\A Helix Jontinalis,\')ox\. ) '' • ' • o 



Not unfrequently met with in ditches. 



10. Lymnea minutus? Drap. | 



Helix limosa, Lin. Syst. > Mud snaiL 



Helix putris, Lin. Trans. ) 



Plentifulin ponds and rivulets. \T\ns\%Li/nn(eaperegra.'\ 



11. Physa fontinalis, Drap t. 3, f- 89 ) p^^,^^^j^ ^^ 

 Bulla jontinalis^ Lin. byst. -J ^^ 



Abundant in the mill dam and in a pond near Norton 

 Mill. 



''• ^^)'/^^/.^7P"°'"t"'' ??•' '• ^' ^' ''' '^ i Moss dipper. 

 Bulla hypnoium, Lin. byst. ) ' ^ 



The species inhabits in abundance the field called Miry 



Carr, between Norton Mill and the Billingham road. 



[Page 25]. 



13. Succinea amphibia, Drap. | ^^^^^ ^^^jj 



Helix succinea, Lin. 1 rans. > p. , f /^s f 



Helix putris, Don. ) "' • •' • j • • 



Very common on the plants by the sides of ditches in 

 all our marshy grounds. [This is Succinea putris. '\ 



14. Helix hispida, Drap., Lin. Syst. 

 Bristly snail. Don., vol. v., t. 151, f. i. 



An amphibious species which is frequently seen both 

 in the water and on plants by the sides of ditches. 



Section II. — Bivalve Shells. 



15. Cyclas cornea, Drap. ) Horny Tellen. 

 Tellina cornea, Lin. Syst. J Don,, vol. iii., t. 96. 



Common in most ditches and streams. 



16. Cyclas lacustris, Drap., t. to, f. 6, 7 I ^^^^ i^e^x^^i 

 Tellina lacustris, Lin. Gmel. f 



A rare shell. It is found in a pond about half-a-mile 

 to the north-east of Portrack. 



[I have found Sph cerium /a^/zi'/?'^ fairly abundant in 

 the district, and particularly so near Port Clarence and all 

 along Cowpen Marsh. It is not uncommon near Norton. 

 — B. H.l 



J.C, v., Jan., 1888. 



