Mollusks. 3361 



Castle, the locality mentioned by Mr. Hanley in his and Mr. Forbes's 

 interesting work on the British Mollusca. 



Mya truncata may now and then, after very rough weather, be 

 found washed up in Weymouth Bay, but it is not common. 



Lyonsia Norvegica. In the year 1849 I picked up two specimeus 

 on the Smallmouth Sands, which measured about an inch in length. 

 Weymouth is mentioned by Messrs. Forbes and Hanley as producing 

 the finest specimens known. 



Thracia villosiuscula is now and then, after rough weather, thrown 

 up on the sands at Smallmouth. 



The solens or razor-shells are very common on the sands both in 

 Smallmouth and Weymouth Bays ; the people call them long oysters. 

 During March, 1850, I found a fine full-grown specimen of Solen sili- 

 qua on Smallmouth Sands, measuring nearly eight inches in length 

 and more than one inch in breadth. The solens have the greatest 

 length and least breadth of all the known Mollusca. The razor-shells, 

 or rather mollusks, at low water, are frequently to be seen in some 

 numbers protruded from the sand, and sometimes they have pushed 

 themselves entirely out, and lie flat on the sand. From what I have 

 observed they appear to protrude themselves more out of the sand on 

 the retiring of the tide, and not to bury themselves deeper, as is men- 

 tioned in the description of Solen marginatus, in Messrs. Forbes and 

 Hanley's British Mollusca. 



Psammobia Ferroensis. Washed up on the Smallmouth Sands af- 

 ter rough weather, sometimes numerous, but never alive ; although 1 

 have dredged many, and had many more brought me by the dredgers, 

 I have never been able to obtain it alive. 



Tellina incarnata. In 1849 and 1850 I have from time to time 

 found the shell of this mollusk on the Smallmouth Sands, but never 

 numerous, and I think I have never taken it alive. I have obtained 

 only six specimens during the two years above mentioned, but single 

 valves and broken shells are more frequently to be met with. This is 

 a scarce British mollusk. 



Tellina tenuis is very common in Weymouth Bay after rough wea- 

 ther, especially close to the steps opposite to the Victoria Hotel; both 

 live and dead specimens are to be found, but the latter predominate, 

 although in a very good state of preservation. 



Tellina fabula. Washed up at times in Weymouth Bay, with the 

 above, but not so numerous. 



Donax anatinus. Frequently washed up in Weymouth Bay, espe- 

 cially in the spring of the year, when an Ulva is attached to one end, 

 X. H 



