136 CATALOGUE OF THE MOLLUSCA 
In crevices of the cliff a little above high-water mark at the 
south end of South Shields sands (the variety), rare—A. ZH. 
Whitburn.— Rev. G. C. Abbves. 
2. C. Bripentatus, Mont. 
Conovulus bidentatus, Gray, Turt. Man. 227, t. 12, f. 145. 
In sand at Tynemouth, rare.—J. A. We have not met with 
this species alive, but it will most likely be found to inhabit the 
crevices of rocks near high-water mark. 
Famity. Limnzrn, Jeffreys. 
38. LIMN AIA, Lamarck. 
1. L. stagnatis, Linn. 
Limneus stagnalis, Gray, Turt. Man. 236, t. 9, f. 104. 
In ponds at Prestwick Car. It occurs in a pond in Mr. 
Sewell’s grounds, Heaton Dean, but may possibly have been in- 
troduced.— A. HZ. 
2. L. patustris, Linn. 
Limneus pulustris, Gray, Turt. Man. 239, t. 9, f. 107. 
In ditches and marshes, not uncommon. 
In Prestwick Car, and in other marshes and still waters, they 
grow to a large size, but at the margins of rivers they are very 
much stunted in growth, and have the aspect of a distinct spe- 
cies. On the shores of the Tyne, where they are abundant, they 
are not larger than the common-sized L. truncatula, and might be 
taken for that species, but for the less ventricose whorls, and that 
the latter species is also found in the same situations in an equally 
dwarfed condition. 
3. L. truncatoa, Aull. 
Limneus minutus, Drap. Hist. Moll. 53, t. 3, f. 5, 6, 7. 
Limneus truncatulus, Gray, Turt. Man. 240, t. 9, f. 108. 
In ditches, common. 
The variety y of Draparnaud, found at the margins of rivers, 
has a very delicate and beautiful shell. The curious monstro- 
sity mentioned by Dr. Turton, with the spire completely sunk 
into the body whorl, was found by us some years ago in Elswick 
Lane, and presented to Dr. Turton, who omitted to mention the 
locality. 
